Low-key values are the structural spine of John Jackson, giving it gravity and atmosphere. Yellow, ochre, sienna: warm hues that John Jackson deploys as the palette's primary energy. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. John Jackson gives 36.1% of the composition to a single #0E0D0E - a decisive chromatic anchor. #C88F56 functions as the palette's exclamation mark: highest chroma, lowest percentage (1.5%). At 62 units of value range, the palette has the tonal breadth to sustain complex spatial readings. This tonal restraint is characteristic of the John Jackson approach: colour serves light, not the reverse. This is palette 11 of John Jackson's sequence - a single chapter in a chromatic story told across many works.