D65 white point

D65 is a white point: the specific chromaticity that counts as “neutral white,” at roughly 6500 K daylight, plotted on the CIE diagram at about x≈0.3127, y≈0.3290. A gamut says which colors are reproducible; the white point says which one is neutral. Rec.709, sRGB and Rec.2020 all use D65, which is why neutral grey stays neutral when you convert between them. Digital cinema uses a different, slightly greener white (DCI white), which is one reason cinema masters can feel subtly distinct from a Rec.709 grade. When a spec says “P3-D65,” the D65 half is telling you the white point.

First used in: 3.1 · Color science foundations