Primary-color meaning

A color belonging to any of three groups each of which is regarded as generating all colors, with the groups being:
  • Additive, physiological, or light primaries red, green, and blue. Lights of red, green, and blue wavelengths may be mixed to produce all colors.
  • Subtractive or colorant primaries magenta, yellow, and cyan. Substances that reflect light of one of these wavelengths and absorb other wavelengths may be mixed to produce all colors.
  • Psychological primaries red, yellow, green, and blue, plus the achromatic pair black and white. All colors may be subjectively conceived as mixtures of these.
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Any of a group of colors from which all other colors can be made by mixing.
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Alternative spelling of primary colour.
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