The value structure of Robert Henri is mid-key: quiet, controlled, and cohesive. The palette achieves thermal balance - reds and blues, ochres and greens, each holding the other in check. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. The dominant colour, #1E1A1B, takes 34.5% of the total area, establishing the overall mood before any other hue is introduced. The saturated accent, #CFA25B, registers at 6.5% - sparse enough to feel like a deliberate surprise. The value range spans 62 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. This is the light Robert Henri preferred, made measurable.