The value structure of Jules Breton is mid-key: quiet, controlled, and cohesive. Jules Breton builds on cool foundations: the palette favours the blue-cyan-green arc. All colours lean toward grey, building depth through value rather than colour punch. #5E553F functions as the palette's exclamation mark: highest chroma, lowest percentage (8.9%). At 63 units of value range, the palette has the tonal breadth to sustain complex spatial readings. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Jules Breton's palette 9 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.