primary colors
The three chromatic colors—red, yellow, and
blue—from which all other hues, tones, and
shades may theoretically be obtained by mixing,
sometimes with the addition of black and white. To
obtain another color, however, it is necessary to
use secondary and intermediate colors, e.g., green
and violet, as well as red, yellow, and blue
pigments of various shades to obtain many hues
because pigment is not pure color. See also: COLOR . (233 , 316 )