The value structure of Duccio is mid-key: quiet, controlled, and cohesive. Warmth dominates - the palette of Duccio leans heavily on the yellow-orange-red arc of the colour wheel. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. At 7.8%, #CA6146 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. This is palette 11 of Duccio's sequence - a single chapter in a chromatic story told across many works.