The value structure of Louis Soutter is mid-key: quiet, controlled, and cohesive. Louis Soutter tilts toward cool - blues and silver-greys carry the structural weight. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. #1F1D20 at 29.0% of the palette: an overwhelming presence that pulls all other colours into its gravitational field. The saturated accent, #A88435, registers at 1.4% - sparse enough to feel like a deliberate surprise. A value spread of 65 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Palette 3 sits within the larger chromatic argument that Louis Soutter's complete body of work advances.