The value structure of Richard Jack is mid-key: quiet, controlled, and cohesive. Warm and cool are kept in productive tension, creating the kind of chromatic harmony that sustains the eye. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. At 3.8%, #CC9C6C carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. A value spread of 63 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. This is the light Richard Jack preferred, made measurable.