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Process yellow is not an RGB color, and there is no fixed conversion from CMYK primaries to RGB.
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Nascent Drama
- Thread starter Bickendan
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The Dork Lord
Whipping Boy
Different formulations are used for printer's ink, so there can be variations in the printed color that is pure yellow ink.
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Process yellow (subtractive primary, sRGB approximation)
— Color coordinates —
Hex triplet #FFEF00
B (r, g, b) (255, 239, 0)
HSV (h, s, v) (60°, 100%, 96%)
Source [1] CMYK
B: Normalized to [0–255] (byte)
— Color coordinates —
Hex triplet #FFEF00
B (r, g, b) (255, 239, 0)
HSV (h, s, v) (60°, 100%, 96%)
Source [1] CMYK
B: Normalized to [0–255] (byte)
The Dork Lord
Whipping Boy
Etymology and definitions
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The word yellow comes from the Old English geolu, or geolwe which derived from the Proto-Germanic word gelwaz.[4]
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The oldest known usage of this word in English is in the Old English poem Beowulf, in a description of a shield made of wood from a yew tree.[5]
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In the English language, yellow is used to describe objects having the color between green and orange in the visible light spectrum (gold, egg yolks, sunflowers, etc.).
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The color is associated with age and aging, both with people and objects (e.g. yellowed-paper).
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Ethnographically, the term yellow has also been used as a slang term for both oriental persons and light-skinned African-Americans.
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The term is associated at times with jealousy, as well as cowardliness.
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Lastly, it is associated with sensational journalistic practices, or yellow journalism, and resistance to militant trade unions.[5]
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Complements of yellow
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Hunt[6] 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."
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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.
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This definition, however, does not constrain what version of white will be specified.
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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.
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Helmholtz says "Yellow and indigo blue" are complements.[7]
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Grassman 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."[8]
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Newton's own color circle has yellow directly opposite the boundary between indigo and violet.
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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).