| 1. | Art. a color, as red, yellow, or blue, that in mixture yields other colors. Compare complementary color (def. 1), secondary color, tertiary color. |
| 2. | Optics. any of a set of monochromatic colors, as red, green, and blue, that are added to match or specify the chromaticity of a stimulus or sample. |
| primary color n. A color belonging to any of three groups each of which is regarded as generating all colors, with the groups being: a. Additive, physiological, or light primaries red, green, and blue. Lights of red, green, and blue wavelengths may be mixed to produce all colors. |
| primary color
Any of a group of colors from which all other colors can be made by mixing. See more at additive, subtractive. See Note at color. |