primary

[4.5]

NOTE: This term and its definition were changed in RP-16-17 Addendum 4. Deletions have a strike-through. New text is bold.

Any one of three lights in terms of which a color is specified by giving the amount of each required to match it by additive combination.

One of a set of colorants or colored lights that can be combined in varying amounts to produce a gamut of colors. 

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