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Color is an important part of the visual arts. Color (or colour) is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of color is influenced by long-term history (nurture) of the observer and also by short-term effects such as the colors nearby. The term color is also used for the property of objects or light sources that can be distinguished by differences in the receptors of the eye.
The colors of the visible light spectrum.
| color | wavelength interval | frequency interval |
|---|---|---|
| red | ~ 625-740 nm | ~ 480-405 THz |
| orange | ~ 590-625 nm | ~ 510-480 THz |
| yellow | ~ 565-590 nm | ~ 530-510 THz |
| green | ~ 500-565 nm | ~ 600-530 THz |
| cyan | ~ 485-500 nm | ~ 620-600 THz |
| blue | ~ 440-485 nm | ~ 680-620 THz |
| violet | ~ 380-440 nm | ~ 790-680 THz |
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Continuous spectrum |
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A surface that diffusely reflectsReflection is the abrupt change in direction of a wave front at an interface between two dissimilar media so that the wave front returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves. all wavelengths equally is perceived as whiteAlternate meanings: White (disambiguation White is a color (more accurately it contains all the colors of the spectrum and is sometimes described as an achromatic color— black is the absence of color) that has high brightness but zero hue. The impression, while a dull blackThis article is about the color black; for other uses, see Black (disambiguation). Black is a color with several subtle differences in meaning. Color or light Black can be defined as the visual impression experienced in directions from which no visible li surface absorbs all wavelengths and does not reflect (for mirrorThis article is about the reflective surfaces. A mirror is a reflective surface that is smooth enough to be able to form an image. The best known example is the plane mirror that most people have at home. In it, a parallel beam of light changes its direct reflection this is different: a proper mirror also reflects all wavelengths equally, but is not perceived as white, while shiny black objects do reflect).
The familiar rainbowgardens at the Canada pavilion at Epcot in Walt Disney World, Lake Buena Vista, Florida, United States. A rainbow is an optical and meteorological phenomenon that causes a (nearly) continuous spectrum of light to appear in the sky when the sun shines onto spectrumThe optical spectrum visible light or visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. The optical spectrum is a composite, or mixture, of the various colors. There are no exact bounds to the optical spectr—named from the Latin word for image by Isaac NewtonKneller's portrait of 1689. Sir Isaac Newton ( December 25, 1642 March 20, 1727 by the Julian calendar then in use; or January 4, 1643 March 31, 1727 by the Gregorian calendar) was an English physicist, mathematician, astronomer, philosopher, and alchemis in 1666Events September 2 Great Fire of London: A large fire breaks out in London in the house of Charles II's baker on Pudding Lane near London Bridge. The fire burns for three days destroying 10,000 buildings including St. Paul's Cathedral, but only 16 people—contains all those colors that consist of visible light of a single wavelength only, the pure spectral or monochromatic colors.
The frequencies are approximations and given in terahertz (THz). The wavelengths, valid in vacuum, are given in nanometers (nm). A list of other objects of similar size is available.
The color table should not be interpreted as a definite list—the pure spectral colors form a continuous spectrum, and how it is divided into distinct colors is a matter of taste and culture; for example, Newton identified the seven colors red, orange, yellow, green, blue, indigo, and violet, remembered by many school children using mnemonics such as Roy G. Biv and Richard Of York Gave Battle In Vain.
Similarly, the intensity of a spectral color may alter its perception considerably; for example, a low-intensity orange-yellow is brown, and a low-intensity yellow-green is olive-green.
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