Low-key values are the structural spine of John Jackson, giving it gravity and atmosphere. Cool tones set the register here - the blues and greens easily outweigh any warm accents. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. Only 2.6% is devoted to #D3B48C, yet that small allocation delivers the palette's entire chromatic tension. At 57 units of value range, the palette has the tonal breadth to sustain complex spatial readings. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. In the context of John Jackson's full range of palettes, group 7 represents one movement in an ongoing chromatic dialogue.