Jean Barbault is strongly light-biased - shadow is suggested rather than declared. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Chroma is moderate: colours carry enough saturation to be read as colour, but the palette stops well short of garish intensity. #795230 functions as the palette's exclamation mark: highest chroma, lowest percentage (4.2%). At 40 units across the value scale, the palette keeps contrast readable without letting it dominate. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Palette 1 sits within the larger chromatic argument that Jean Barbault's complete body of work advances.