In this article, we will explore the topic of Yellow in depth, addressing its most relevant and current aspects. From its origins to its impact on today's society, through the different approaches and perspectives that have developed over time. This topic is of utmost importance today, since it has generated extensive debate and reflection in various areas, from politics to culture, and has marked a turning point in the way we address different problems. Throughout the development of this article, we will analyze the different aspects of Yellow, delving into its implications and generating a space for critical reflection around this phenomenon.

Spectral coordinates
Wavelength575–585 nm
Frequency521–512 THz
About these coordinates     Color coordinates
Hex triplet#FFFF00
sRGBB (r, g, b)(255, 255, 0)
HSV (h, s, v)(60°, 100%, 100%)
CIELChuv (L, C, h)(97, 107, 86°)
B: Normalized to (byte)
H: Normalized to (hundred)

Yellow is the color between green and orange on the spectrum of light. It is evoked by light with a dominant wavelength of roughly 575–585 nm. It is a primary color in subtractive color systems, used in painting or color printing. In the RGB color model, used to create colors on television and computer screens, yellow is a secondary color made by combining red and green at equal intensity. Carotenoids give the characteristic yellow color to autumn leaves, corn, canaries, daffodils, and lemons, as well as egg yolks, buttercups, and bananas. They absorb light energy and protect plants from photo damage in some cases. Sunlight has a slight yellowish hue when the Sun is near the horizon, due to atmospheric scattering of shorter wavelengths (green, blue, and violet).

Because it was widely available, yellow ochre pigment was one of the first colors used in art; the Lascaux cave in France has a painting of a yellow horse 17,000 years old. Ochre and orpiment pigments were used to represent gold and skin color in Egyptian tombs, then in the murals in Roman villas. In the early Christian church, yellow was the color associated with the Pope and the golden keys of the Kingdom, but it was also associated with Judas Iscariot and used to mark heretics. In the 20th century, Jews in Nazi-occupied Europe were forced to wear a yellow star. In China, bright yellow was the color of the Middle Kingdom, and could be worn only by the emperor and his household; special guests were welcomed on a yellow carpet.

According to surveys in Europe, Canada, the United States and elsewhere, yellow is the color people most often associate with amusement, gentleness, humor, happiness, and spontaneity; however it can also be associated with duplicity, envy, jealousy, greed, justice, and, in the U.S., cowardice. In Iran it has connotations of pallor/sickness, but also wisdom and connection. In China and many Asian countries, it is seen as the color of happiness, glory, harmony and wisdom.


The word yellow is from the Old English geolu, geolwe (oblique case), meaning "yellow, and yellowish", derived from the Proto-Germanic word gelwaz "yellow". It has the same Indo-European base, gel-, as the words gold and yell; gʰel- means both bright and gleaming, and to cry out.

The English term is related to other Germanic words for yellow, namely Scots yella, East Frisian jeel, West Frisian giel, Dutch geel, German gelb, and Swedish and Norwegian gul. According to the Oxford English Dictionary, the oldest known use of this word in English is from The Epinal Glossary in 700.

Science and nature

Optics, color printing, and computer screens

Process Yellow (subtractive primary)
About these coordinates     Color coordinates
Hex triplet#FFEF00
sRGBB (r, g, b)(255, 239, 0)
HSV (h, s, v)(56°, 100%, 100%)
CIELChuv (L, C, h)(93, 103, 80°)
Source CMYK
ISCC–NBS descriptorVivid greenish yellow
B: Normalized to (byte)

Yellow is found between green and red on the spectrum of visible light. It is the color the human eye sees when it looks at light with a dominant wavelength between 570 and 590 nanometers.

In color printing, yellow is one of the three subtractive primary colors of ink along with magenta and cyan. Together with black, they can be overlaid in the right combination to print any full color image. (See the CMYK color model). A particular yellow is used, called Process yellow (also known as "pigment yellow", "printer's yellow", and "canary yellow"). Process yellow is not an RGB color, and there is no fixed conversion from CMYK primaries to RGB. Different formulations are used for printer's ink, so there can be variations in the printed color that is pure yellow ink.

The yellow on a color television or computer screen is created in a completely different way; by combining green and red light at the right level of intensity. (See RGB color model).

Complementary colors

Complements of yellow have a dominant wavelength in the range 380 to 480 nm. The green lines show several possible pairs of complementary colors with respect to different blackbody color temperature neutrals, illustrated by the "Planckian locus".

Traditionally, the complementary color of yellow is purple; the two colors are opposite each other on the color wheel long used by painters. Vincent van Gogh, an avid student of color theory, used combinations of yellow and purple in several of his paintings for the maximum contrast and harmony.

Hunt defines that "two colors are complementary when it is possible to reproduce the tristimulus values of a specified achromatic stimulus by an additive mixture of these two stimuli." That is, when two colored lights can be mixed to match a specified white (achromatic, non-colored) light, the colors of those two lights are complementary. This definition, however, does not constrain what version of white will be specified. In the nineteenth century, the scientists Grassmann and Helmholtz did experiments in which they concluded that finding a good complement for spectral yellow was difficult, but that the result was indigo, that is, a wavelength that today's color scientists would call violet or purple. Helmholtz says "Yellow and indigo blue" are complements. Grassmann reconstructs Newton's category boundaries in terms of wavelengths and says "This indigo therefore falls within the limits of color between which, according to Helmholtz, the complementary colors of yellow lie."

Newton's own color circle has yellow directly opposite the boundary between indigo and violet. These results, that the complement of yellow is a wavelength shorter than 450 nm, are derivable from the modern CIE 1931 system of colorimetry if it is assumed that the yellow is about 580 nm or shorter wavelength, and the specified white is the color of a blackbody radiator of temperature 2800 K or lower (that is, the white of an ordinary incandescent light bulb). More typically, with a daylight-colored or around 5000 to 6000 K white, the complement of yellow will be in the blue wavelength range, which is the standard modern answer for the complement of yellow.

Because of the characteristics of paint pigments and use of different color wheels, painters traditionally regard the complement of yellow as the color indigo or blue-violet.


Lasers emitting in the yellow part of the spectrum are less common and more expensive than most other colors. In commercial products diode pumped solid state (DPSS) technology is employed to create the yellow light. An infrared laser diode at 808 nm is used to pump a crystal of neodymium-doped yttrium vanadium oxide (Nd:YVO4) or neodymium-doped yttrium aluminum garnet (Nd:YAG) and induces it to emit at two frequencies (281.76 THz and 223.39 THz: 1064 nm and 1342 nm wavelengths) simultaneously. This deeper infrared light is then passed through another crystal containing potassium, titanium and phosphorus (KTP), whose non-linear properties generate light at a frequency that is the sum of the two incident beams (505.15 THz); in this case corresponding to the wavelength of 593.5 nm ("yellow"). This wavelength is also available, though even more rarely, from a helium–neon laser. However, this not a true yellow, as it exceeds 590 nm. A variant of this same DPSS technology using slightly different starting frequencies was made available in 2010, producing a wavelength of 589 nm, which is considered a true yellow color. The use of yellow lasers at 589 nm and 594 nm have recently become more widespread thanks to the field of optogenetics.


Stars of spectral classes F and G have color temperatures that make them look "yellowish". The first astronomer to classify stars according to their color was F. G. W. Struve in 1827. One of his classifications was flavae, or yellow, and this roughly corresponded to stars in the modern spectral range F5 to K0. The Strömgren photometric system for stellar classification includes a 'y' or yellow filter that is centered at a wavelength of 550 nm and has a bandwidth of 20–30 nm.

Supergiant stars are rarely yellow supergiants because F and G class supergiants are physically unstable; they are most often a transitional phase between blue supergiants and red supergiants. Some yellow supergiants, the Cepheid variables, pulsate with a period proportional to their absolute magnitude; hence, if their apparent magnitude is known, the distance to them can be calculated with great precision. Cepheid variables were hence used to determine distances within and beyond the Milky Way galaxy. The most famous example is the current North Pole star, Polaris.


Autumn leaves, yellow flowers, bananas, oranges and other yellow fruits all contain carotenoids, yellow and red organic pigments that are found in the chloroplasts and chromoplasts of plants and some other photosynthetic organisms like algae, some bacteria and some fungi. They serve two key roles in plants and algae: they absorb light energy for use in photosynthesis, and they protect the green chlorophyll from photodamage.

In late summer, as daylight hours shorten and temperatures cool, the veins that carry fluids into and out of the leaf are gradually closed off. The water and mineral intake into the leaf is reduced, slowly at first, and then more rapidly. It is during this time that the chlorophyll begins to decrease. As the chlorophyll diminishes, the yellow and red carotenoids become more and more visible, creating the classic autumn leaf color.

Carotenoids are common in many living things; they give the characteristic color to carrots, maize, daffodils, rutabagas, buttercups and bananas. They are responsible for the red of cooked lobsters, the pink of flamingoes and salmon and the yellow of canaries and egg yolks.

Xanthophylls are the most common yellow pigments that form one of two major divisions of the carotenoid group. The name is from Greek xanthos (ξανθος, "yellow") + phyllon (φύλλον, "leaf"). Xanthophylls are most commonly found in the leaves of green plants, but they also find their way into animals through the food they eat. For example, the yellow color of chicken egg yolks, fat, and skin comes from the feed the chickens consume. Chicken farmers understand this, and often add xanthophylls, usually lutein, to make the egg yolks more yellow.

Bananas are green when they are picked because of the chlorophyll their skin contains. Once picked, they begin to ripen; hormones in the bananas convert amino acids into ethylene gas, which stimulates the production of several enzymes. These enzymes start to change the color, texture and flavor of the banana. The green chlorophyll supply is stopped and the yellow color of the carotenoids replaces it; eventually, as the enzymes continue their work, the cell walls break down and the bananas turn brown.


  • Yellowtail is the common name for dozens of different fish species that have yellow tails or a yellow body. Most of the time, yellowtail(fish) actually refers to Japanese amberjack, a fish that lives between Japan and Hawaii.
  • Yellowfin tuna (Thunnus albacares) is a species of tuna, having bright yellow anal and second dorsal fins. Found in tropical and subtropical seas and weighing up to 200 kg (440 lb), it is caught as a replacement for depleted stocks of bluefin tuna.
  • Smallmouth yellowfish (Labeobarbus aeneus) is a species of ray-finned fish in the genus Labeobarbus. It has become an invasive species in rivers of the Eastern Cape, South Africa, such as the Mbhashe River.


A yellow jacket wasp
  • The yellow-fever mosquito (Aedes aegypti) is a mosquito so named because it transmits dengue fever and yellow fever, the mosquito-borne viruses.
  • Yellowjackets are black-and-yellow wasps of the genus Vespula or Dolichovespula (though some can be black-and-white, the most notable of these being the bald-faced hornet, Dolichovespula maculata). They can be identified by their distinctive black-and-yellow color, small size (slightly larger than a bee), and entirely black antennae.


American aspens, Populus tremuloides
  • Populus tremuloides is a deciduous tree native to cooler areas of North America, one of several species referred to by the common name aspen. Populus tremuloides is the most widely distributed tree in North America, being found from Canada to central Mexico.
  • The yellow birch (Betula alleghaniensis) is a birch species native to eastern North America, from Nova Scotia, New Brunswick, and southern Quebec west to Minnesota, and south in the Appalachian Mountains to northern Georgia. They are medium-sized deciduous trees and can reach about 20 m (66 ft) tall, trunks up to 80 cm (31 in) in diameter. The bark is smooth and yellow-bronze, and the wood is extensively used for flooring, cabinetry, and toothpicks.
  • The Thorny Yellowwood is an Australian rainforest tree which has deep yellow wood.
  • Yellow poplar is a common name for Liriodendron, the tuliptree. The common name is inaccurate as this genus is not related to poplars.
  • The Handroanthus albus is a tree with yellow flowers native to the Cerrado of Brazil.

History, art, and fashion


Yellow, in the form of yellow ochre pigment made from clay, was one of the first colors used in prehistoric cave art. The cave of Lascaux has an image of a horse colored with yellow estimated to be 17,300 years old.

Ancient history

In Ancient Egypt, yellow was associated with gold, which was considered to be imperishable, eternal and indestructible. The skin and bones of the gods were believed to be made of gold. The Egyptians used yellow extensively in tomb paintings; they usually used either yellow ochre or the brilliant orpiment, though it was made of arsenic and was highly toxic. A small paintbox with orpiment pigment was found in the tomb of King Tutankhamun. Men were always shown with brown faces, women with yellow ochre or gold faces.

The ancient Romans used yellow in their paintings to represent gold and also in skin tones. It is found frequently in the murals of Pompeii.

Post-classical history

During the Post-Classical period, yellow became firmly established as the color of Judas Iscariot, the disciple who betrayed Jesus Christ, even though the Bible never describes his clothing. From this connection, yellow also took on associations with envy, jealousy and duplicity.

The tradition started in the Renaissance of marking non-Christian outsiders, such as Jews, with the color yellow. In 16th-century Spain, those accused of heresy and who refused to renounce their views were compelled to come before the Spanish Inquisition dressed in a yellow cape.

The color yellow has been historically associated with moneylenders and finance. The National Pawnbrokers Association's logo depicts three golden spheres hanging from a bar, referencing the three bags of gold that the patron saint of pawnbroking, St. Nicholas, holds in his hands. Additionally, the symbol of three golden orbs is found in the coat of arms of the House of Medici, a famous fifteenth-century Italian dynasty of bankers and lenders.

Modern history

18th and 19th centuries

The 18th and 19th century saw the discovery and manufacture of synthetic pigments and dyes, which quickly replaced the traditional yellows made from arsenic, cow urine, and other substances.

c. 1776, Jean-Honoré Fragonard painted A Young Girl Reading. She is dressed in a bright saffron yellow dress. This painting is "considered by many critics to be among Fragonard's most appealing and masterly".

The 19th-century British painter J. M. W. Turner was one of the first in that century to use yellow to create moods and emotions, the way romantic composers were using music. His painting Rain, Steam, and Speed – the Great Central Railway was dominated by glowing yellow clouds.

Georges Seurat used the new synthetic colors in his experimental paintings composed of tiny points of primary colors, particularly in his famous Sunday Afternoon on the Isle de la Grand jatte (1884–86). He did not know that the new synthetic yellow pigment, zinc yellow or zinc chromate, which he used in the light green lawns, was highly unstable and would quickly turn brown.

The painter Vincent van Gogh was a particular admirer of the color yellow, the color of sunshine. Writing to his sister from the south of France in 1888, he wrote, "Now we are having beautiful warm, windless weather that is very beneficial to me. The sun, a light that for lack of a better word I can only call yellow, bright sulfur yellow, pale lemon gold. How beautiful yellow is!" In Arles, Van Gogh painted sunflowers inside a small house he rented at 2 Place Lamartine, a house painted with a color that Van Gogh described as "buttery yellow". Van Gogh was one of the first artists to use commercially manufactured paints, rather than paints he made himself. He used the traditional yellow ochre, but also chrome yellow, first made in 1809; and cadmium yellow, first made in 1820.

At the end of the 19th century, in 1895, a new popular art form began to appear in New York newspapers; the color comic strip. It took advantage of a new color printing process, which used color separation and three different colors of ink; magenta, cyan, and yellow, plus black, to create all the colors on the page. One of the first characters in the new comic strips was a humorous boy of the New York streets named Mickey Dugen, more commonly known as the Yellow Kid, from the yellow nightshirt he wore. He gave his name (and color) to the whole genre of popular, sensational journalism, which became known as "yellow journalism".

20th and 21st centuries

In the 20th century, yellow was revived as a symbol of exclusion, as it had been in the Middle Ages and Renaissance. Jews in Nazi Germany and German-occupied countries were required to sew yellow triangles with the star of David onto their clothing.

In the 20th century, modernist painters reduced painting to its simplest colors and geometric shapes. The Dutch modernist painter Piet Mondrian made a series of paintings which consisted of a pure white canvas with a grid of vertical and horizontal black lines and rectangles of yellow, red, and blue.

Yellow was particularly valued in the 20th century because of its high visibility. Because of its ability to be seen well from greater distances and at high speeds, yellow makes for the ideal color to be viewed from moving automobiles. It often replaced red as the color of fire trucks and other emergency vehicles, and was popular in neon signs, especially in Las Vegas and in China, where yellow was the most esteemed color.

In the 1960s, Pickett Brand developed the "Eye Saver Yellow" slide rule, which was produced with a specific yellow color (Angstrom 5600) that reflects long-wavelength rays and promotes optimum eye-ease to help prevent eyestrain and improve visual accuracy.

The 21st century saw the use of unusual materials and technologies to create new ways of experiencing the color yellow. One example was The weather project, by Danish-Icelandic artist Olafur Eliasson, which was installed in the open space of the Turbine Hall of London's Tate Modern in 2003.

Eliasson used humidifiers to create a fine mist in the air via a mixture of sugar and water, as well as a semi-circular disc made up of hundreds of monochromatic lamps which radiated yellow light. The ceiling of the hall was covered with a huge mirror, in which visitors could see themselves as tiny black shadows against a mass of light.

Fruits, vegetables, and eggs

Many fruits are yellow when ripe, such as lemons and bananas, their color derived from carotenoid pigments. Egg yolks gain their color from xanthophylls, also a type of carotenoid pigment.


Yellow is a common color of flowers.

Other plants

  • Rapeseed (Brassica napus), also known as rape or oilseed rape, is a bright yellow flowering member of the family Brassicaceae (mustard or cabbage family).
  • Goldenrod is a yellow flowering plant in the family Asteraceae.

Minerals and chemistry

Structure of Titan yellow


Yellow ochre quarry in Roussillon, France
  • Yellow ochre (also known as Mars yellow, Pigment yellow 42, 43), hydrated ferric oxide (Fe
    ), is a naturally occurring pigment found in clays in many parts of the world. It is non-toxic and has been used in painting since prehistoric times.
  • Indian yellow is a transparent, fluorescent pigment used in oil paintings and watercolors. Originally magnesium euxanthate, it was claimed to have been produced from the urine of Indian cows fed only on mango leaves. It has now been replaced by synthetic Indian yellow hue.
  • Naples Yellow (lead antimonate yellow) is one of the oldest synthetic pigments, derived from the mineral bindheimite and used extensively up to the 20th century. It is toxic and nowadays is replaced in paint by a mixture of modern pigments.
  • Cadmium Yellow (cadmium sulfide, CdS) has been used in artists' paints since the mid-19th century. Because of its toxicity, it may nowadays be replaced by azo pigments.
  • Chrome yellow (lead chromate, PbCrO
    ), derived from the mineral crocoite, was used by artists in the earlier part of the 19th century, but has been largely replaced by other yellow pigments because of the toxicity of lead.
  • Zinc yellow or zinc chromate is a synthetic pigment made in the 19th century, and used by the painter Georges Seurat in his pointillist paintings. He did not know that it was highly unstable, and would quickly turn brown.
  • Titanium yellow (nickel antimony titanium yellow rutile, NiO·Sb
    ) is created by adding small amounts of the oxides of nickel and antimony to titanium dioxide and heating. It is used to produce yellow paints with good white coverage and has the LBNL paint code "Y10".
  • Gamboge is an orange-brown resin, derived from trees of the genus Garcinia, which becomes yellow when powdered. It was used as a watercolor pigment in the far east from the 8th century – the name "gamboge" is derived from "Cambodia" – and has been used in Europe since the 17th century.
  • Orpiment, also called King's Yellow or Chinese Yellow is arsenic trisulfide (As
    ) and was used as a paint pigment until the 19th century when, because of its high toxicity and reaction with lead-based pigments, it was generally replaced by Cadmium Yellow.
  • Azo dye-based pigment (a brightly colored transparent or semitransparent dye with a white pigment) is used as the colorant in most modern paints requiring either a highly saturated yellow or simplicity of color mixing. The most common is the monoazo arylide yellow family, first marketed as Hansa Yellow.


  • Curcuma longa, also known as turmeric, is a plant grown in India and Southeast Asia which serves as a dye for clothing, especially monks' robes; as a spice for curry and other dishes; and as a popular medicine. It is also used as a food coloring for mustard and other products.
  • Saffron, like turmeric, is one of the rare dyes that is also a spice and food colorant. It is made from the dried red stigma of the crocus sativus flower. It must be picked by hand and it takes 150 flowers to obtain a single gram of stigma, so it is extremely expensive. It probably originated in the Mediterranean or Southwest Asia, and its use was detailed in a 7th-century BC Assyrian botanical reference compiled under Ashurbanipal. It was known in India at the time of the Buddha, and after his death his followers decreed that monks should wear robes the color of saffron. Saffron was used to dye the robes of the senior Buddhist monks, while ordinary monks wore robes dyed with Gamboge or Curcuma longa, also known as Turmeric.

The color of saffron comes from crocin, a red variety of carotenoid natural pigment. The color of the dyed fabric varies from deep red to orange to yellow, depending upon the type of saffron and the process. Most saffron today comes from Iran, but it is also grown commercially in Spain, Italy and Kashmir in India, and as a boutique crop in New Zealand, the United Kingdom, France, Switzerland and other countries. In the United States, it has been cultivated by the Pennsylvania Dutch community since the early 18th century. Because of the high price of saffron, other similar dyes and spices are often sold under the name saffron; for instance, what is called Indian saffron is often really turmeric.

  • Reseda luteola, also known as dyers weed, yellow weed or weld, has been used as a yellow dye from neolithic times. It grew wild along the roads and walls of Europe, and was introduced into North America, where it grows as a weed. It was used as both as a yellow dye, whose color was deep and lasting, and to dye fabric green, first by dyeing it blue with indigo, then dyeing it with reseda luteola to turn it a rich, solid and lasting green. It was the most common yellow dye in Europe from the Middle Ages until the 18th century, when it was replaced first by the bark of the quercitron tree from North America, then by synthetic dyes. It was also widely used in North Africa and in the Ottoman Empire.
  • Gamboge is a deep saffron to mustard yellow pigment and dye. In Asia, it is frequently used to dye Buddhist monks' robes. Gamboge is most often extracted by tapping resin from various species of evergreen trees of the family Guttiferae, which grow in Cambodia, Thailand, and elsewhere in Southeast Asia. "Kambuj" (Sanskrit: कंबुज) is the ancient Sanskrit name for Cambodia.

Food coloring

The most common yellow food coloring in use today is called Tartrazine. It is a synthetic lemon yellow azo dye. It is also known as E number E102, C.I. 19140, FD&C yellow 5, acid yellow 23, food yellow 4, and trisodium 1-(4-sulfonatophenyl)-4-(4-sulfonatophenylazo)-5-pyrazolone-3-carboxylate. It is the yellow most frequently used such processed food products as corn and potato chips, breakfast cereals such as corn flakes, candies, popcorn, mustard, jams and jellies, gelatin, soft drinks (notably Mountain Dew), energy and sports drinks, and pastries. It is also widely used in liquid and bar soap, shampoo, cosmetics and medicines. Sometimes it is mixed with blue dyes to color processed products green.

It is typically labelled on food packages as "color", "tartrazine", or "E102". In the United States, because of concerns about possible health problems related to intolerance to tartrazine, its presence must be declared on food and drug product labels.

Another popular synthetic yellow coloring is Sunset Yellow FCF (also known as orange yellow S, FD&C yellow 6 and C.I. 15985) It is manufactured from aromatic hydrocarbons from petroleum. When added to foods sold in Europe, it is denoted by E number E110.

Symbolism and associations

In the west, yellow is not a well-loved color. In a year 2000 survey, only 6% of respondents in Europe and America named it as their favorite color, compared with 45% for blue, 15% for green, 12% for red, and 10% for black. For 7% of respondents, it was their least favorite color. Yellow is considered a color of ambivalence and contradiction. It is associated with optimism and amusement, but also with betrayal, duplicity, and jealousy. However, in China and other parts of Asia, yellow is a color of virtue and nobility.

In China

Yellow has strong historical and cultural associations in China, where huáng ( or ) is the color of happiness, glory, and wisdom. Although huáng originally and occasionally still covers a range inclusive of tans and oranges, speakers of modern Standard Mandarin tend to map their use of huáng to shades corresponding to English yellow.

In Chinese symbolism, yellow, red, and green are masculine colors, while black and white are considered feminine. After the development of the theory of five elements, the Chinese reckoned various correspondences. On a five season model, late summer was characterized by yellowing leaves.[dubiousdiscuss] Yellow was taken as the color of the fifth direction of the compass, the central. China is called the Middle Kingdom; the palace of the Emperor was considered to be in the exact center of the world. The legendary first emperor of China was called the Yellow Emperor and the last, Puyi (1906–67), described in his memoirs how every object which surrounded him as a child was yellow. "It made me understand from my most tender age that I was of a unique essence, and it instilled in me the consciousness of my 'celestial nature' which made me different from every other human." The Chinese Emperor was literally considered the child of heaven, with both a political and religious role, both symbolized by yellow. After the Song dynasty, laws banned the use of certain bright yellow shades by anyone but the emperor. Distinguished visitors were honored with a yellow, not a red, carpet.

In current Chinese pop culture, the term "yellow movie" (黃色電影) refers to films and other cultural items of a pornographic nature, analogous to the English "blue movie". This was the basis of the 2007 "very erotic very violent" meme, with the word "erotic" calquing Chinese "yellow".

Light and reason

Yellow, as the color of sunlight when sun is near the horizon, is commonly associated with warmth. Yellow combined with red symbolized heat and energy. A room painted yellow feels warmer than a room painted white, and a lamp with yellow light seems more natural than a lamp with white light.

As the color of light, yellow is also associated with knowledge and wisdom. In English and many other languages, "brilliant" and "bright" mean intelligent. In Islam, the yellow color of gold symbolizes wisdom. In medieval European symbolism, red symbolized passion, blue symbolized the spiritual, and yellow symbolized reason. In many European universities, yellow gowns and caps are worn by members of the faculty of physical and natural sciences, as yellow is the color of reason and research.

Gold and blond

Gold coin, Aureus, Auguste, Lyon.

In ancient Greece and Rome, the gods were often depicted with yellow, or blonde hair, which was described in literature as 'golden'. The color yellow was associated with the sun gods Helios and Apollo. It was fashionable in ancient Greece for men and women to dye their hair yellow, or to spend time in the sun to bleach it. In ancient Rome, prostitutes were required to bleach their hair, to be easily identified, but it also became a fashionable hair color for aristocratic women, influenced by the exotic blonde hair of many of the newly conquered slaves from Gaul, Britain, and Germany. However, in medieval Europe and later, the word yellow often had negative connotations; associated with betrayal, so yellow hair was more poetically called 'blond,' 'light', 'fair,' or most often "golden".

Visibility and caution

Yellow is the most visible color from a distance, so it is often used for objects that need to be seen, such as fire engines, road maintenance equipment, school buses and taxicabs. It is also often used for warning signs, since yellow traditionally signals caution, rather than danger. Safety yellow is often used for safety and accident prevention information. A yellow light on a traffic signal means slow down, but not stop. The Occupational Safety and Health Administration (OSHA) uses Pantone 116 (a yellow hue) as their standard color implying "general warning", while the Federal Highway Administration similarly uses yellow to communicate warning or caution on highway signage. A yellow penalty card in a soccer match means warning, but not expulsion.

Optimism and pleasure

Yellow is the color most associated with optimism and pleasure; it is a color designed to attract attention, and is used for amusement. Yellow dresses in fashion are rare, but always associated with gaiety and celebration.

Mayan and Italian

The ancient Maya associated the color yellow with the direction South. The Maya glyph for "yellow" (k'an) also means "precious" or "ripe".

"Giallo", in Italian, refers to crime stories, both fictional and real. This association began in about 1930, when the first series of crime novels published in Italy had yellow covers.



"Yellow vests" protest in France, November 2018
  • Yellow as a political color is most commonly associated with liberalism, libertarianism and anarcho-capitalism. Contemporary political parties using yellow include the Liberal Democrats and UKIP in the United Kingdom, the SNP in Scotland, ACT in New Zealand, and Libertarian Party in the United States.
  • In the United States, a yellow dog Democrat was a Southern voter who consistently voted for Democratic candidates in the late 19th and early 20th centuries because of lingering resentment against the Republicans dating back to the Civil War and Reconstruction period. Today the term refers to a hard-core Democrat, supposedly referring to a person who would vote for a "yellow dog" before voting for a Republican.
  • In China the Yellow Turbans were a Daoist sect that staged an extensive rebellion during the Han dynasty.
  • The 1986 People Power Revolution in the Philippines was also known as the Yellow Revolution due to the presence of yellow ribbons during the demonstrations. Liberal and pro-democracy political parties and organizations such as UNIDO, PDP-Laban, and the Liberal Party have used the color yellow. More recently, it has become a pejorative term used by some pro-Ferdinand Marcos and pro-Rodrigo Duterte against the opposition.
  • In France in November and December 2018, an opposition movement called the Yellow Vests went into the streets to protest against the fiscal policies of President Emmanuel Macron. They wore yellow safety vests, which French motorists are required by law to have in their cars.

Selected national and international flags

Three of the five most populous countries in the world (China and Brazil) have yellow or gold in their flag, representing about half of the world's population. While many flags use yellow, their symbolism varies widely, from civic virtue to golden treasure, golden fields, the desert, royalty, the keys to Heaven and the leadership of the Communist Party. In classic European heraldry, yellow, along with white, is one of the two metals (called gold and silver) and therefore flags following heraldic design rules must use either yellow or white to separate any of their other colors (see the rule of tincture and insignia).

Defunct flags


  • In Buddhism, the saffron colors of robes to be worn by monks were defined by the Buddha himself and his followers in the 5th century BCE. The robe and its color is a sign of renunciation of the outside world and commitment to the order. The candidate monk, with his master, first appears before the monks of the monastery in his own clothes, with his new robe under his arm, and asks to enter the order. He then takes his vows, puts on the robes, and with his begging bowl, goes out to the world. Thereafter, he spends his mornings begging and his afternoons in contemplation and study, either in a forest, garden, or in the monastery. According to Buddhist scriptures and commentaries, the robe dye is allowed to be obtained from six kinds of substances: roots and tubers, plants, bark, leaves, flowers and fruits. The robes should also be boiled in water a long time to get the correctly sober color. Saffron and ochre, usually made with dye from the curcuma longa plant or the heartwood of the jackfruit tree, are the most common colors. The so-called forest monks usually wear ochre robes and city monks saffron, though this is not an official rule. The color of robes also varies somewhat among the different "vehicles", or schools of Buddhism, and by country, depending on their doctrines and the dyes available. The monks of the strict Vajrayana, or Tantric Buddhism, practiced in Tibet, wear the most colorful robes of saffron and red. The monks of Mahayana Buddhism, practiced mainly in Japan, China and Korea, wear lighter yellow or saffron, often with white or black. Monks of Hinayana Buddhism, practiced in Southeast Asia, usually wear ochre or saffron color. Monks of the forest tradition in Thailand and other parts of Southeast Asia wear robes of a brownish ochre, dyed from the wood of the jackfruit tree.
  • In Hinduism, the divinity Krishna is commonly portrayed dressed in yellow. Yellow and saffron are also the colors worn by sadhu, or wandering holy men in India. The Hindu almighty and divine god Lord Ganesha or Ganpati is mostly dressed with a dhotar in yellow, which is popularly known as pivla pitambar and is considered to be the most auspicious one.
  • In Sikhism: The Sikh Rehat Maryada clearly states that the Nishan Sahib hoisted outside every Gurudwara should be xanthic (Basanti in Punjabi) or greyish blue (modern day Navy blue) (Surmaaee in Punjabi) color.
  • In Islam, the yellow color of gold symbolizes wisdom.
  • In the religions of the islands of Polynesia, yellow is a sacred color, the color of the divine essence; the word "yellow" in the local languages is the same as the name of the curcuma longa plant, which is considered the food of the gods.
  • In the Roman Catholic Church, yellow symbolizes gold, and in Christian mythology the golden key to the Kingdom of Heaven, which divine Christ gave to Saint Peter. The flag of the Vatican City and the colors of the pope are yellow and white, symbolizing the gold key and the silver key. White and yellow together can also symbolize Easter, rebirth and Resurrection. Yellow also has a negative meaning, symbolizing betrayal; Judas Iscariot is usually portrayed wearing a pale yellow toga. Yellow and golden halos mark the saints in religious paintings.
  • In Wicca, yellow represents intellect, inspiration, imagination, and knowledge. It is used for communication, confidence, divination, and study.

New Age Spiritual Metaphysics

  • In the metaphysics of the New Age author, Alice A. Bailey, in her system called the Seven Rays which classifies humans into seven different metaphysical psychological types, the fourth ray of harmony through conflict is represented by the color yellow. People who have this metaphysical psychological type are said to be on the Yellow Ray."
  • Yellow is used to symbolically represent the third, solar plexus chakra (Manipura).
  • Psychics who claim to be able to observe the aura with their third eye report that someone with a yellow aura is typically someone who is in an occupation requiring intellectual acumen, such as a scientist.


Bradley Wiggins wears the yellow jersey in the 2012 Tour de France.
Eurocopter EC135P1 of Western Power Distribution, used for electricity line inspection


  • In some countries, taxicabs are commonly yellow. This practice began in Chicago, where taxi entrepreneur John D. Hertz painted his taxis yellow based on a University of Chicago study alleging that yellow is the color most easily seen at a distance.
  • In Canada and the United States, school buses are almost uniformly painted a yellow color (often referred to as "school bus yellow") for purposes of visibility and safety, and British bus operators such as FirstGroup are attempting to introduce the concept there.
  • "Caterpillar yellow" and "high-visibility yellow" are used for highway construction equipment.
  • In the rules of the road, yellow (called "amber" in Britain) is a traffic light signal meaning "slow down", "caution", or "slow speed ahead". It is intermediate between green (go) and red (stop). In railway signaling, yellow is often the color for warning, slow down, such as with distant signals.
  • Selective yellow is used in some automotive headlamps and fog lights to reduce the dazzling effects of rain, snow, and fog.

Maritime signaling

Idioms and expressions

  • Yellow-belly is an American expression which means a coward. The term comes from the 19th century and the exact origin is unknown, but it may refer to the color of sickness, which means a person lacks strength and stamina.
  • Yellow journalism is also an American term for news which present limited research to its findings.
  • Yellow pages refers in various countries to directories of telephone numbers, arranged alphabetically by the type of business or service offered.
  • Asian people, especially East Asians, have been racialized as yellow.
    • The Yellow Peril was a term used in politics and popular fiction in the late 19th and early 20th century to describe the alleged economic and cultural danger posed to Europe and America by Chinese immigration. The term was first used by Kaiser Wilhelm II in Germany in 1895, and was the subject of numerous books and later films.
    • Yellow fever is a slang phrase to describe an Asian race fetish.
  • High yellow was a term sometimes used in the early 20th century, to describe light-skinned African-Americans.
  • Yellow snow, snow that is yellow from urination.

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