The value structure of High Renaissance is mid-key: quiet, controlled, and cohesive. Yellow, ochre, sienna: warm hues deployed as the palette's primary energy. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The saturated accent, #AE5F43, registers at 2.6% - sparse enough to feel like a deliberate surprise. From deepest dark to palest light, the palette traverses 64 units of the value scale - a span that creates natural depth.