How much of human color vision can you cover with N primaries?
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0.0%
of visible chromaticities covered, by area in CIE 1931 xy
Primaries — 3
Presets
Diagram
Coverage compared
Percentages are area shares of the visible region and depend on the space you
measure in: the xy diagram famously over-weights greens, while u′v′ is closer
to perceptually uniform. Colors outside your display’s gamut are clamped, so the
far reaches of the horseshoe are approximations.