Henri Jules Ferdinand Bellery-Defonaines is high in key: pale, luminous, and filled with optical air. 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, #BE7437, is reserved to 3.4% of the surface, where it acts as a focal punctuation. The value range of 46 units sits in the comfortable middle: enough depth, enough light, neither extreme. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Henri Jules Ferdinand Bellery-Defonaines's palette 1 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.