Mid-key values give Willem van Haecht its characteristic quietness - nothing blazes, nothing disappears. Willem van Haecht builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. #9C6F39 delivers the chromatic peak at only 3.5% - a small shot of colour with outsized visual impact. Value range is moderate at 43 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. In the context of Willem van Haecht's full range of palettes, group 1 represents one movement in an ongoing chromatic dialogue.