Petrus Christus sits in the centre of the value range, lending the palette a sense of even, sustained light. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. All colours lean toward grey, building depth through value rather than colour punch. The most saturated colour, #C0805F, is reserved to 7.7% of the surface, where it acts as a focal punctuation. At 56 units of value range, the palette has the tonal breadth to sustain complex spatial readings. In the context of Petrus Christus's full range of palettes, group 4 represents one movement in an ongoing chromatic dialogue.