Mid-key values give Claude Arnulphy its characteristic quietness - nothing blazes, nothing disappears. Temperature is cool-dominant, with blue and green families claiming the largest areas. All colours lean toward grey, building depth through value rather than colour punch. The most saturated colour, #72360C, is reserved to 2.6% of the surface, where it acts as a focal punctuation. At 62 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. Claude Arnulphy's palette 1 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.