The palette of Theodule Ribot sits in the lower register of the value scale - dense, contained, and weighted. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. The saturated accent, #CAAF7D, registers at 4.3% - sparse enough to feel like a deliberate surprise. A value spread of 65 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. Theodule Ribot's palette 4 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.