Pietro da Cortona keeps values measured and balanced, a hallmark of tonal restraint. Temperature is balanced: the palette pits warm earth against cool sky without declaring a winner. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. The most saturated colour, #9E6C3F, is reserved to 6.9% of the surface, where it acts as a focal punctuation. The full value range is 62 units: broad enough to build convincing three-dimensional form. In the context of Pietro da Cortona's full range of palettes, group 4 represents one movement in an ongoing chromatic dialogue.