The value structure of Jan Matejko is mid-key: quiet, controlled, and cohesive. 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. The most saturated colour, #E5C294, is reserved to 3.4% of the surface, where it acts as a focal punctuation. A value spread of 62 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. In the context of Jan Matejko's full range of palettes, group 13 represents one movement in an ongoing chromatic dialogue.