Mid-key values give Pierre-Marie Beyle its characteristic quietness - nothing blazes, nothing disappears. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Saturation is measured and controlled, giving the palette presence without visual aggression. The highest-chroma note - #432D18 - appears at just 9.5%, deployed as a precision accent against the quieter ground. The value range spans 61 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Pierre-Marie Beyle's palette 4 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.