Paul Jacoulet is strongly light-biased - shadow is suggested rather than declared. Paul Jacoulet builds on cool foundations: the palette favours the blue-cyan-green arc. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. #D3563F functions as the palette's exclamation mark: highest chroma, lowest percentage (5.3%). 67 units of value range underpin the palette's structural clarity: the eye always knows where light falls. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. In the context of Paul Jacoulet's full range of palettes, group 10 represents one movement in an ongoing chromatic dialogue.