backgrounds

The gradient that stays clean

Comparator that draws the same gradient three times, interpolating in plain sRGB, in linearised sRGB and in Oklab with the matrices, the cube root and the way back written by hand, flagging the steps that fall outside the gamut. Under each strip goes its measured lightness curve, where the four point dip that dulls sRGB shows up against the straight Oklab line, and a cursor reads the exact colour of all three at the same position.