The value structure of Walter Osborne is mid-key: quiet, controlled, and cohesive. Walter Osborne tilts toward cool - blues and silver-greys carry the structural weight. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. #6B782D delivers the chromatic peak at only 1.7% - a small shot of colour with outsized visual impact. The full value range is 59 units: broad enough to build convincing three-dimensional form. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. This is the light Walter Osborne preferred, made measurable.