Alexandre Jacob works in the upper reaches of the value scale, creating an atmosphere of brightness and expansiveness. Cool tones set the register here - the blues and greens easily outweigh any warm accents. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. #AD8C65 at 4.0% is both the most chromatic and one of the largest colours in the palette - chroma as mass rather than as highlight. Value range is moderate at 46 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. This is palette 1 of Alexandre Jacob's sequence - a single chapter in a chromatic story told across many works.