Mid-key values give Pierre Jean Edmond Castan its characteristic quietness - nothing blazes, nothing disappears. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. The most saturated colour, #A88655, covers 18.7% of the surface: too much to call an accent, too strong to ignore. A value spread of 74 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Pierre Jean Edmond Castan's palette 3 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.