The value structure of Duccio is mid-key: quiet, controlled, and cohesive. Duccio orchestrates warmth above all else - reds, ambers, and siennas take the lead. Colours are neither washed out nor blazing; they occupy the productive middle ground of the chroma scale. The highest-chroma note - #D19A35 - appears at just 1.2%, deployed as a precision accent against the quieter ground. The palette spans 47 value units: a measured range that delivers coherence over drama. These proportions encode Duccio's instinctive sense of how much of each quality the eye can hold.