Leonardo da Vinci is high in key: pale, luminous, and filled with optical air. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. #E2D9B8 at 18.2% is both the most chromatic and one of the largest colours in the palette - chroma as mass rather than as highlight. A value spread of 75 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. This is palette 3 of Leonardo da Vinci's sequence - a single chapter in a chromatic story told across many works.