Values in John Jackson rest in the mid-range - neither dramatically lit nor steeped in shadow. John Jackson builds on cool foundations: the palette favours the blue-cyan-green arc. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. The most saturated colour, #817155, is reserved to 11.1% of the surface, where it acts as a focal punctuation. At 62 units of value range, the palette has the tonal breadth to sustain complex spatial readings. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. In the context of John Jackson's full range of palettes, group 1 represents one movement in an ongoing chromatic dialogue.