Suprematism as a style is partly defined by its colour: this palette makes that definition concrete. Suprematism occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Built on cool foundations: the palette favours the blue-cyan-green arc. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. A single dominant - #DCD7C8 at 34.2% - sets the character of the whole composition. The saturated accent, #D44A32, registers at 8.2% - sparse enough to feel like a deliberate surprise. The full value range is 61 units: broad enough to build convincing three-dimensional form. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is the light that Suprematism painters chose to live inside.