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1. (Colours) Also called: additive primary any of three spectral colours (usually red, green, and blue) that can be mixed to match any other colour, including white light but excluding black
2. (Colours) Also called: subtractive primary any one of the spectral colours cyan, magenta, or yellow that can be subtracted from white light to match any other colour. An equal mixture of the three produces a black pigment
3. (Colours) Also called: psychological primary any one of the colours red, yellow, green, or blue. All other colours look like a mixture of two or more of these colours and they play a unique role in the processing of colour by the visual system
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|Noun||1.||primary colour - any of three colors from which all others can be obtained by mixing|
color, coloring, colouring, colour - a visual attribute of things that results from the light they emit or transmit or reflect; "a white color is made up of many different wavelengths of light"
primary color for pigments, primary colour for pigments - any of three pigments from which all colors can be obtained by mixing; "the primary colors for pigments are red, blue, and yellow"
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