The value structure of Pierre Bonnard is mid-key: quiet, controlled, and cohesive. Pierre Bonnard builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. The saturated accent, #BE6845, registers at 4.2% - sparse enough to feel like a deliberate surprise. From deepest dark to palest light, the palette traverses 62 units of the value scale - a span that creates natural depth. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Pierre Bonnard's palette 15 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.