John Boultbee sits in the centre of the value range, lending the palette a sense of even, sustained light. Warm and cool tones are held in careful balance - neither family dominates, creating tension and resolution simultaneously. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The most saturated colour, #7E4024, is reserved to 5.3% of the surface, where it acts as a focal punctuation. At 65 units of value range, the palette has the tonal breadth to sustain complex spatial readings. In the context of John Boultbee's full range of palettes, group 2 represents one movement in an ongoing chromatic dialogue.