Pierre Jean Edmond Castan distributes its values across the middle register, creating harmony without high contrast. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. At 2.4%, #E9D9A7 carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. A value spread of 62 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. Pierre Jean Edmond Castan's palette 2 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.