Mid-key values give Claude Deruet its characteristic quietness - nothing blazes, nothing disappears. Warm and cool tones are held in careful balance - neither family dominates, creating tension and resolution simultaneously. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. The saturated accent, #28485C, registers at 2.4% - sparse enough to feel like a deliberate surprise. At 65 units of value range, the palette has the tonal breadth to sustain complex spatial readings. The palette is recognisably Claude Deruet's own: particular in its temperature, chroma, and the economy of its brightest note.