Definitions for "Primaries"
Large outermost flight feathers on wing. Can vary from 9-11, but the number remains constant within a species.
Thin feathers, 10-12 inches long, growing from the "hand" of the wing. They are used in forward propulsion during flight.
The large, lift-giving feathers found at the end of the wing. Bald eagles' primary feathers are notched at the end.
Keywords:  cielab, cie, xyz, rgb, cmyk
The components of a color in a color model. They may be actual primary colors perceivable by humans, as in RGB or CMYK, or they may be imaginary mathematical constructs, as with CIE XYZ (1931) or CIELAB.