Values in Luca Signorelli rest in the mid-range - neither dramatically lit nor steeped in shadow. Warm hues command this palette; Luca Signorelli favours the reds, oranges, and yellows of firelight and earth. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The saturated accent, #9C5444, registers at 3.4% - sparse enough to feel like a deliberate surprise. Value range is moderate at 47 units - enough contrast for legibility, not so much as to fragment the tonal unity. This is palette 5 of Luca Signorelli's sequence - a single chapter in a chromatic story told across many works.