Geertgen tot Sint Jans is built on dark foundations, with values clustered toward shadow. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. Geertgen tot Sint Jans gives 27.8% of the composition to a single #16110F - a decisive chromatic anchor. The most saturated colour, #84572D, is reserved to 1.6% of the surface, where it acts as a focal punctuation. At 43 units across the value scale, the palette keeps contrast readable without letting it dominate. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. This is palette 5 of Geertgen tot Sint Jans's sequence - a single chapter in a chromatic story told across many works.