Mid-key values give self-portrait its characteristic quietness - nothing blazes, nothing disappears. Warm hues command this palette; it favours the reds, oranges, and yellows of firelight and earth. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The palette gives 30.3% of the composition to a single #191618 - a decisive chromatic anchor. At 2.8%, #B9744A carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. The full value range is 64 units: broad enough to build convincing three-dimensional form.