Gustave Caillebotte keeps values measured and balanced, a hallmark of tonal restraint. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. All colours lean toward grey, building depth through value rather than colour punch. #6682B5 functions as the palette's exclamation mark: highest chroma, lowest percentage (4.0%). A value spread of 59 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. Palette 6 sits within the larger chromatic argument that Gustave Caillebotte's complete body of work advances.