The value structure of self-portrait is mid-key: quiet, controlled, and cohesive. Neither warm nor cool has the upper hand here; the equilibrium between the two generates the palette's visual energy. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. The most saturated colour, #7D4E30, is reserved to 5.2% of the surface, where it acts as a focal punctuation. At 55 units of value range, the palette has the tonal breadth to sustain complex spatial readings.