The palette of Henri Regnault sits in the lower register of the value scale - dense, contained, and weighted. Temperature is cool-dominant, with blue and green families claiming the largest areas. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The saturated accent, #D6C299, registers at 2.2% - sparse enough to feel like a deliberate surprise. The full value range is 62 units: broad enough to build convincing three-dimensional form. This tonal restraint is characteristic of the Henri Regnault approach: colour serves light, not the reverse. This is palette 4 of Henri Regnault's sequence - a single chapter in a chromatic story told across many works.