The value structure of Piero della Francesca is mid-key: quiet, controlled, and cohesive. Warmth dominates - the palette of Piero della Francesca 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. #D2C396 delivers the chromatic peak at only 9.4% - a small shot of colour with outsized visual impact. 53 units of value spread create a palette that is varied but unified - contrast in the service of harmony. This is the light Piero della Francesca preferred, made measurable.