The value structure of Jacob van Schuppen is mid-key: quiet, controlled, and cohesive. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. Colours are neither washed out nor blazing; they occupy the productive middle ground of the chroma scale. At 10.4%, #2F1D12 carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. Value range is moderate at 48 units - enough contrast for legibility, not so much as to fragment the tonal unity. In the context of Jacob van Schuppen's full range of palettes, group 4 represents one movement in an ongoing chromatic dialogue.