The value structure of Karel Breydel is mid-key: quiet, controlled, and cohesive. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. The saturated accent, #906E47, registers at 8.0% - sparse enough to feel like a deliberate surprise. The full value range is 74 units: broad enough to build convincing three-dimensional form. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. The palette is a signature: Karel Breydel's particular sense of value, warmth, and colour weight made legible.