Gustave Bourgain is strongly light-biased - shadow is suggested rather than declared. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. All colours lean toward grey, building depth through value rather than colour punch. #EAE8DB at 31.6% of the palette: an overwhelming presence that pulls all other colours into its gravitational field. At 1.9%, #BD7756 carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. Value range is moderate at 51 units - enough contrast for legibility, not so much as to fragment the tonal unity. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Gustave Bourgain's palette 1 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.