The value structure of Cornelis Jansz. de Heem is mid-key: quiet, controlled, and cohesive. Cornelis Jansz. de Heem builds on cool foundations: the palette favours the blue-cyan-green arc. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. Cornelis Jansz. de Heem gives 48.6% of the composition to a single #17130B - a decisive chromatic anchor. The saturated accent, #E7C089, registers at 3.7% - sparse enough to feel like a deliberate surprise. The full value range is 80 units: broad enough to build convincing three-dimensional form. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. In the context of Cornelis Jansz. de Heem's full range of palettes, group 1 represents one movement in an ongoing chromatic dialogue.