The value structure of Henri Matisse is mid-key: quiet, controlled, and cohesive. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. The saturated accent, #9F402F, registers at 4.2% - sparse enough to feel like a deliberate surprise. 61 units of value range underpin the palette's structural clarity: the eye always knows where light falls. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is palette 18 of Henri Matisse's sequence - a single chapter in a chromatic story told across many works.