The value structure of Post-Impressionism is mid-key: quiet, controlled, and cohesive. Built on cool foundations: the palette favours the blue-cyan-green arc. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. At 4.4%, #AB663D carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. The value range of 52 units sits in the comfortable middle: enough depth, enough light, neither extreme. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively.