The value structure of Jan van Nickelen is mid-key: quiet, controlled, and cohesive. Temperature is cool-dominant, with blue and green families claiming the largest areas. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. At 8.8%, #60643B carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. The full value range is 65 units: broad enough to build convincing three-dimensional form. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. The palette is recognisably Jan van Nickelen's own: particular in its temperature, chroma, and the economy of its brightest note.