The value structure of Masaccio is mid-key: quiet, controlled, and cohesive. Warmth dominates - the palette of Masaccio leans heavily on the yellow-orange-red arc of the colour wheel. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. #982719 delivers the chromatic peak at only 4.1% - a small shot of colour with outsized visual impact. The full value range is 81 units: broad enough to build convincing three-dimensional form. Palette 4 sits within the larger chromatic argument that Masaccio's complete body of work advances.