The value structure of John Riley is mid-key: quiet, controlled, and cohesive. Warmth dominates - the palette of John Riley leans heavily on the yellow-orange-red arc of the colour wheel. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. The highest-chroma note - #5A3D33 - appears at just 6.3%, deployed as a precision accent against the quieter ground. The palette spans 54 value units: a measured range that delivers coherence over drama. In the context of John Riley's full range of palettes, group 4 represents one movement in an ongoing chromatic dialogue.