Indigo is the color on the spectrum between about 450 and 420 nm in wavelength, placing it between blue and violet. Color scientists do not usually recognize indigo as a significant color category, and generally classify wavelengths shorter than about 450 nm as violet.^[1] Color is an important part of the visual arts. ... In most modern usages of the word spectrum, there is a unifying theme of between extremes at either end. ... A nanometre (American spelling: nanometer, symbol nm) is a unit of length in the metric system, equal to one thousand-millionth of a metre, which is the current SI base unit of length. ... The wavelength is the distance between repeating units of a wave pattern. ... YOU SUCK!!!!! ... Violet (named after the flower violet) is used in two senses: first, referring to the color of light at the short-wavelength end of the visible spectrum, approximately 380–420 nanometres (this is a spectral color). ...

Indigo and violet are different from purple, which cannot be seen on the electromagnetic spectrum but can be achieved by mixing blue light with red light. Not to be confused with Violet (color). ... YOU SUCK!!!!! ... Red is any of a number of similar colors evoked by light consisting predominantly of the longest wavelengths of light discernible by the human eye, in the wavelength range of roughly 625–750 nm. ...

One can see spectral indigo by looking at the reflection of a fluorescent tube in a non-recordable compact disc. This works because the CD functions as a diffraction grating, and a fluorescent lamp generally has a peak at 435.833 nm (from mercury), as is visible on the fluorescent lamp spectrum. A Compact Disc or CD is an optical disc used to store digital data, originally developed for storing digital audio. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Fluorescent lamps in Shinbashi, Tokyo, Japan Assorted types of fluorescent lamps. ... General Name, Symbol, Number mercury, Hg, 80 Chemical series transition metals Group, Period, Block 12, 6, d Appearance silvery Standard atomic weight 200. ... Fluorescent lamps in Shinbashi, Tokyo, Japan Assorted types of fluorescent lamps. ...

Wikisource has original text related to this article:

An 1869 debate over whether indigo is really the color indicated on the spectrum.

Image File history File links Wikisource-logo. ... The original Wikisource logo. ...

Distinction between four shades of indigo

Like many other colors (orange and violet are the best-known), indigo gets its name from an object in the natural world—the plant named indigo once used for dyeing cloth (see also Indigo dye). The orange, a fruit from which the modern name of the orange colour comes. ... Violet (named after the flower violet) is used in two senses: first, referring to the color of light at the short-wavelength end of the visible spectrum, approximately 380–420 nanometres (this is a spectral color). ... There is no single indigo plant. A variety of plants have been used to produce indigo dye. ... Indigo dye indigo molecule Indigo dye is an important dyestuff with a distinctive blue color (see indigo). ...

The color electric indigo is an approximation of spectrum indigo. This is the brightest color indigo that can be approximated on a computer screen—it is the color between the web color blue and the color electric violet. Authors of web pages have a variety of options available for specifying colors for elements of web documents. ... YOU SUCK!!!!! ... Violet (named after the flower violet) is used in two senses: first, referring to the color of light at the short-wavelength end of the visible spectrum, approximately 380–420 nanometres (this is a spectral color). ...

The web color blue violet or deep indigo is a shade of indigo brighter than pigment indigo but not as bright as electric indigo.

The color pigment indigo is equivalent to the web color indigo and approximates the color indigo that is usually reproduced in pigments and colored pencils. Authors of web pages have a variety of options available for specifying colors for elements of web documents. ...

The color of indigo dye is a different color than either spectrum indigo or pigment indigo. This is the actual color of the dye from the indigo plant when switched onto raw fabric. A vat full of this dye is a darker color, approximating the web color Midnight Blue. Midnight Blue is a dark shade of blue that was named for its darkness. ...

When specifying the color indigo, it is necessary to indicate which particular one of these four major shades of indigo you are referring to.

Electric indigo

Electric Indigo
— Color coordinates —
Hex triplet		#6600FF
RGBB	(r, g, b)	(102, 0, 255)
HSV	(h, s, v)	(264°, 100%, 100%)
Source		HTML Color Chart @264
B: Normalized to [0–255] (byte)

In an RGB color space, spectral indigo and violet must be approximated by purples, this is, by mixing a little red with a lot of blue. Spectral indigo is closely approximated by the color electric indigo. This sample was taken directly from the CIE chromaticity diagram opposite the 430 nanometer line. It is much brighter than the pigment indigo reproduced below. Spectrum Indigo fits nicely between spectrum violet and spectrum blue as can be seen in the color bands displayed below. It is impossible to represent spectrum indigo exactly on a computer screen, because true spectrum indigo is outside the color triangle or gamut of the RGB color space defined by the monitor primaries. Web colors are colors used in designing web pages, and the methods for describing and specifying those colors. ... A representation of additive color mixing—In CRT based (analog electronics) television three color electron guns are used to stimulate such an arrangement of phosphorescent coatings of the glass, the resultant reemission of photons providing the image seen by the eye. ... Red is any of a number of similar colors evoked by light consisting predominantly of the longest wavelengths of light discernible by the human eye, in the wavelength range of roughly 625–750 nm. ... Mossy, green fountain in Wattens, Austria. ... YOU SUCK!!!!! ... This article or section does not cite its references or sources. ... An image with the hues cyclically shifted The hues in the image of this Painted Bunting are cyclically rotated with time. ... It has been suggested that this article or section be merged with Chromaticity. ... Brightness is an attribute of visual perception in which a source appears to emit a given amount of light. ... A comparison of different color spaces. ... In the study of the perception of color, one of the first mathematically defined color spaces was the CIE XYZ color space (also known as CIE 1931 color space), created by the International Commission on Illumination (CIE) in 1931. ... Violet (named after the flower violet) is used in two senses: first, referring to the color of light at the short-wavelength end of the visible spectrum, approximately 380–420 nanometres (this is a spectral color). ... YOU SUCK!!!!! ... In color reproduction, including computer graphics and photography, the gamut, or color gamut (pronounced ), is a certain complete subset of colors. ... A comparison of different color spaces. ...

Indigo is neither an additive primary color nor a subtractive primary color. It was named and defined by Isaac Newton when he divided up the optical spectrum (which is a continuum of frequencies). He specifically named seven colors primarily to match the seven notes of a western major scale, because he believed sound and light were physically similar, but also to link colors with the (known) planets, days of the week, and other lists that had seven items. A primary color is a color that cannot be created by mixing other colors in the gamut of a given color space. ... Sir Isaac Newton (4 January 1643 – 31 March 1727) [ OS: 25 December 1642 – 20 March 1726][1] was an English physicist, mathematician, astronomer, natural philosopher, and alchemist. ... The visible spectrum is the portion of the optical spectrum (light or electromagnetic spectrum) that is visible to the human eye. ... 7 (seven) is the natural number following 6 and preceding 8. ... In music theory, the major scale is one of the diatonic scales. ... The eight planets and three dwarf planets of the Solar System. ... Look up day in Wiktionary, the free dictionary. ... For the TV station in the Peoria-Bloomington, Illinois market, see WEEK-TV. A week is a unit of time longer than a day and shorter than a month. ...

Humans do not tend to recognize indigo as a separate hue category between blue and violet. For this reason, some commentators, including Isaac Asimov, have suggested that indigo should not be regarded as a color in its own right but merely as a shade of blue or violet. Color scientists typically divide the spectrum at about 450 nm between violet and blue, with no indigo.^[1][2] An image with the hues cyclically shifted The hues in the image of this Painted Bunting are cyclically rotated with time. ... Isaac Asimov (January 2?, 1920?[1] – April 6, 1992), IPA: , originally Исаак Озимов but now transcribed into Russian as Айзек Азимов) was a Russian-born American Jewish author and professor of biochemistry, a highly successful and exceptionally prolific writer best known for his works of science fiction and for his popular science books. ...

Others continue to accept it ^[3] as it has been accepted traditionally as one of Newton's named colors of the spectrum along with red, orange, yellow, green, blue, and violet. The newton (symbol: N) is the SI unit of force. ... In most modern usages of the word spectrum, there is a unifying theme of between extremes at either end. ... Red is any of a number of similar colors evoked by light consisting predominantly of the longest wavelengths of light discernible by the human eye, in the wavelength range of roughly 625–750 nm. ... See also Orange (disambiguation) for other meanings of the word. ... A yellow Tulip. ... Mossy, green fountain in Wattens, Austria. ... YOU SUCK!!!!! ... Violet (named after the flower violet) is used in two senses: first, referring to the color of light at the short-wavelength end of the visible spectrum, approximately 380–420 nanometres (this is a spectral color). ...

Deep indigo (web color blue violet)

Blue Violet
— Color coordinates —
Hex triplet		#8A2BE2
RGBB	(r, g, b)	(138, 43, 226)
HSV	(h, s, v)	(271°, 81%, 89%)
Source		X11
B: Normalized to [0–255] (byte)

At right is displayed the web color blue violet, a color intermediate in brightness between electric indigo and pigment indigo. This color is also called deep indigo.
Web colors are colors used in designing web pages, and the methods for describing and specifying those colors. ... A representation of additive color mixing—In CRT based (analog electronics) television three color electron guns are used to stimulate such an arrangement of phosphorescent coatings of the glass, the resultant reemission of photons providing the image seen by the eye. ... Red is any of a number of similar colors evoked by light consisting predominantly of the longest wavelengths of light discernible by the human eye, in the wavelength range of roughly 625–750 nm. ... Mossy, green fountain in Wattens, Austria. ... YOU SUCK!!!!! ... This article or section does not cite its references or sources. ... An image with the hues cyclically shifted The hues in the image of this Painted Bunting are cyclically rotated with time. ... It has been suggested that this article or section be merged with Chromaticity. ... Brightness is an attribute of visual perception in which a source appears to emit a given amount of light. ... Web colors are colors used in designing web pages, and the methods for describing and specifying those colors. ... Authors of web pages have a variety of options available for specifying colors for elements of web documents. ...

Pigment indigo (web color indigo)

Pigment Indigo
— Color coordinates —
Hex triplet		#4B0082
RGBB	(r, g, b)	(75, 0, 130)
HSV	(h, s, v)	(275°, 60%, 51%)
Source		X11
B: Normalized to [0–255] (byte)

The color box at right displays the web color Indigo which is equivalent to pigment indigo, the color indigo as it would be reproduced by artists' paints as opposed to the brighter indigo above (electric indigo) that it is possible to reproduce on a computer screen. Web colors are colors used in designing web pages, and the methods for describing and specifying those colors. ... A representation of additive color mixing—In CRT based (analog electronics) television three color electron guns are used to stimulate such an arrangement of phosphorescent coatings of the glass, the resultant reemission of photons providing the image seen by the eye. ... Red is any of a number of similar colors evoked by light consisting predominantly of the longest wavelengths of light discernible by the human eye, in the wavelength range of roughly 625–750 nm. ... Mossy, green fountain in Wattens, Austria. ... YOU SUCK!!!!! ... This article or section does not cite its references or sources. ... An image with the hues cyclically shifted The hues in the image of this Painted Bunting are cyclically rotated with time. ... It has been suggested that this article or section be merged with Chromaticity. ... Brightness is an attribute of visual perception in which a source appears to emit a given amount of light. ... Web colors are colors used in designing web pages, and the methods for describing and specifying those colors. ... Authors of web pages have a variety of options available for specifying colors for elements of web documents. ...

Pigment indigo can be obtained by mixing 55% pigment cyan with about 45% pigment magenta. Cyan (from Greek κυανοs, meaning blue) may be used as the name of any of a number of a range of colors in the blue/green part of the spectrum. ... Magenta is a color made up of equal parts of red and blue light. ...

Compare the subtractive colors to the additive colors in the two primary color charts in the article on primary colors to see the distinction between electric colors as reproducible from light on a computer screen (additive colors) and the pigment colors reproducible with pigments (subtractive colors); the additive colors are a lot brighter because they are produced from light instead of pigment. Primary Colors, a 1996 novel by Anonymous (later revealed by Donald Foster to be journalist Joe Klein), is a roman à clef about U.S. President Bill Clintons first presidential campaign in 1992. ...

Pigment indigo (web color indigo) represents the way the color indigo was always reproduced in pigments, paints, or colored pencils in the 1950s. By the 1970s, because of the advent of psychedelic art, artists became used to brighter pigments, and pigments called "bright indigo" or "bright blue-violet" that are the pigment equivalent of the electric indigo reproduced in the section above became available in artists' pigments and colored pencils.
This article is about the handwriting instrument. ... Year 1950 (MCML) was a common year starting on Sunday (link will display the full calendar) of the Gregorian calendar. ... 1970 (MCMLXX) was a common year starting on Thursday. ... For psychedelics, see psychedelic drug. ... The Bath, a painting by Mary Cassatt (1844–1926). ...

Indigo dye

Indigo Dye
— Color coordinates —
Hex triplet		#00416A
RGBB	(r, g, b)	(0, 65, 106)
HSV	(h, s, v)	(275°, 40%, 40%)
Source		ISCC-NBS
B: Normalized to [0–255] (byte)

At right is displayed the color indigo dye, an approximation of the color of a swatch of indigo dye. Web colors are colors used in designing web pages, and the methods for describing and specifying those colors. ... A representation of additive color mixing—In CRT based (analog electronics) television three color electron guns are used to stimulate such an arrangement of phosphorescent coatings of the glass, the resultant reemission of photons providing the image seen by the eye. ... Red is any of a number of similar colors evoked by light consisting predominantly of the longest wavelengths of light discernible by the human eye, in the wavelength range of roughly 625–750 nm. ... Mossy, green fountain in Wattens, Austria. ... YOU SUCK!!!!! ... This article or section does not cite its references or sources. ... An image with the hues cyclically shifted The hues in the image of this Painted Bunting are cyclically rotated with time. ... It has been suggested that this article or section be merged with Chromaticity. ... Brightness is an attribute of visual perception in which a source appears to emit a given amount of light. ... Indigo dye indigo molecule Indigo dye is an important dyestuff with a distinctive blue color (see indigo). ...

Sample of Indigo Dye color: ISCC-NBS Dictionary of Color Names (1955)--Color Sample of Indigo Dye (Indigo color sample #179)

Indigo in human culture

Food

• The outer skin of many varieties of eggplant is colored pigment indigo.^{[citation needed]}
• So called "purple" carrots and potatoes are actually colored pigment indigo.^{[citation needed]}

Midwifery Binomial name L. The aubergine, eggplant or brinjal (Solanum melongena) is a solanaceous plant bearing a fruit of the same name, commonly used as a vegetable in cooking. ... Not to be confused with Violet (color). ... Binomial name Daucus carota A carrot (Daucus Carota) is a root vegetable, typically orange or white in color with a woody texture. ... Binomial name Solanum tuberosum L. The potato (Solanum tuberosum) is a perennial plant of the Solanaceae, or nightshade, family, grown for its starchy tuber. ... // Midwifery is the term traditionally used to describe the art of assisting a woman through childbirth. ...

• In the ancient Maya civilization indigo was the one color that was recognized for its soothing effect on pregnant women and their unborn children. Pregnant women often wore this color in order to protect themselves and their child from danger and to ensure a safe and successful delivery.^{[citation needed]}

Music This article is about the pre-Columbian Maya civilization. ... // Music is an art form consisting of sound and silence expressed through time. ...

• The Indigo Girls are a folk rock group.^{[citation needed]}

New Age Metaphysics Indigo Girls are an American folk rock duo, consisting of Amy Ray and Emily Saliers. ... Bob Dylans folk-rock album, Blonde on Blonde Folk-rock is a musical genre, combining elements of folk music and rock music. ... New Age describes a broad movement characterized by alternative approaches to traditional Western culture. ... Plato (Left) and Aristotle (right), by Raphael (Stanza della Segnatura, Rome) Metaphysics is the branch of philosophy concerned with explaining the ultimate nature of reality, being, and the world. ...

• In the metaphysics of the New Age Prophetess, Alice A. Bailey, in her system called the Seven Rays which classifies humans into seven different metaphysical personality types, the second ray of love-wisdom is represented by the color indigo.^{[citation needed]}
• The Alice A. Bailey books are bound in the color Persian blue, a shade of indigo.^{[citation needed]}

New Age Philosophy Plato (Left) and Aristotle (right), by Raphael (Stanza della Segnatura, Rome) Metaphysics is the branch of philosophy concerned with explaining the ultimate nature of reality, being, and the world. ... New Age describes a broad movement characterized by alternative approaches to traditional Western culture. ... Alice A. Bailey (1880‑1949), writer and lecturer on neo-theosophy, was born in England in 1880 as Alice LaTrobe Bateman. ... The Seven Rays is an occult theory that is used within Theosophy and the occult organizations and religions based on Theosophy, such as the Alice Bailey material, the I Am movement and its many daughter organizations, the Church Universal and Triumphant, and the group founded by Benjamin Creme known as... Trinomial name Homo sapiens sapiens Linnaeus, 1758 Humans, or human beings, are bipedal primates belonging to the mammalian species Homo sapiens (Latin: wise man or knowing man) in the family Hominidae (the great apes). ... Persian blue is a kind of dark blue nearing purple. ... New Age describes a broad movement characterized by alternative approaches to traditional Western culture. ... The philosopher Socrates about to take poison hemlock as ordered by the court. ...

• The color electric indigo is used to symbolically represent the sixth chakra (called Ajna), which is said to include the third eye. This chakra is believed to be related to intuition and gnosis (spiritual knowledge).^{[citation needed]}

Parapsychology For the Naruto jutsu, see Chakra (Naruto). ... Ajna is the sixth primary chakra according to the Indian Tantric tradition (Shakta). ... 17th century representation of the third eye connection to the higher worlds by alchemist Robert Fludd. ... Look up Intuition in Wiktionary, the free dictionary. ... This article or section does not adequately cite its references or sources. ... Parapsychology is the study of evidence for paranormal psychological phenomena such as telepathy, clairvoyance, and psychokinesis (Parapsychology, n. ...

• Psychics who claim to be able to observe the aura with their third eye generally associate indigo, in auras, with an interest in religion or with intense spirituality and intuition. ^[4] Indigo children are said to have predominately indigo auras. People with indigo auras are said to be in occupations such as computer analyst, animal caretaker, and counselor.^[5]

Sociology Psychic is a term relating to or denoting extra-sensory abilities or phenomena that are apparently inexplicable by known natural laws, since they transcend the confines of our current understanding of what a human being is capable of. ... For other uses, see Aura. ... Spirituality, in a narrow sense, concerns itself with matters of the spirit. ... This article or section is in need of attention from an expert on the subject. ... Computer analyst may refer to: Programmer Programmer analyst Business analyst Systems analyst Category: ... Shepherd with his sheep in Făgăraş Mountains, Romania. ... Look up Counselor in Wiktionary, the free dictionary. ... This article or section includes a list of works cited or a list of external links, but its sources remain unclear because it lacks in-text citations. ...

• Indigo was the color worn by the Dalits (Untouchables) in India before their pariah status was made illegal. If those of the higher castes touched any indigo object, they had to perform a ritual expiation. ^[6]

Video Games In the Indian caste system, a Dalit, often called an untouchable,or an outcaste, is a person who according to traditional Hindu belief does not have any varnas. Varna refers to the Hindu belief that most humans were supposedly created from different parts of the body of the divinity Purusha. ... Untouchable may refer to any of the following: Formerly or derogatively, to the large Dalit (outcaste) populations of India and Nepal. ... Look up Pariah in Wiktionary, the free dictionary. ... Illegal, or unlawful, is either prohibitted or not authorized by law. ... Caste systems are traditional, hereditary systems of social restriction and social stratification, enforced by law or common practice, based on endogamy, occupation, economic status, race, ethnicity, etc. ... A ritual is a set of actions, performed mainly for their symbolic value, which is prescribed by a religion or by the traditions of a community. ... This article is about computer and video games. ...

• The color most associated with the Nintendo Gamecube is a purplish indigo, officially deemed indigo.^{[citation needed]}

Nintendo Company, Limited (任天堂 or ニンテンドー Nintendō; NASDAQ: NTDOY, TYO: 7974 usually referred to as simply Nintendo, or Big N ) is a multinational corporation founded on September 23, 1889[1] in Kyoto, Japan by Fusajiro Yamauchi to produce handmade hanafuda cards. ... The Nintendo GameCube (Japanese: ゲームキューブ; originally code-named Dolphin during development; abbreviated as GCN) is Nintendos fourth home video game console, belonging to the 128-bit era; the same generation as Segas Dreamcast, Sonys PlayStation 2, and Microsofts Xbox. ...

See also

• List of colors
• Indigo dye
• Indiglo, a brand name for a method of electroluminescence technology

. ... Indigo dye indigo molecule Indigo dye is an important dyestuff with a distinctive blue color (see indigo). ... The Indiglo® nightlight uniformly lights the surface of the Timexs watchs dials using patented electroluminescent lighting technology, very similar to the Illuminator® used by Casio. ... Animation of LCD, both unlit and with electroluminiscent backlight switched on Electroluminescence (EL) is an optical phenomenon and electrical phenomenon where a material emits light in response to an electric current passed through it, or to a strong electric field. ...

References