Values in Gustave Loiseau rest in the mid-range - neither dramatically lit nor steeped in shadow. Gustave Loiseau tilts toward cool - blues and silver-greys carry the structural weight. All colours lean toward grey, building depth through value rather than colour punch. #D2BFB6 functions as the palette's exclamation mark: highest chroma, lowest percentage (4.7%). Value range is moderate at 52 units - enough contrast for legibility, not so much as to fragment the tonal unity. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. In the context of Gustave Loiseau's full range of palettes, group 15 represents one movement in an ongoing chromatic dialogue.