Mid-key values give Edouard de Vigne 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. At 5.5%, #6997B9 carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. At 66 units of value range, the palette has the tonal breadth to sustain complex spatial readings. Palette 4 sits within the larger chromatic argument that Edouard de Vigne's complete body of work advances.