Joseph Ducreux distributes its values across the middle register, creating harmony without high contrast. Joseph Ducreux 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. The most saturated colour, #203642, is reserved to 11.2% of the surface, where it acts as a focal punctuation. 70 units of value range underpin the palette's structural clarity: the eye always knows where light falls. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. In the context of Joseph Ducreux's full range of palettes, group 1 represents one movement in an ongoing chromatic dialogue.