Jean Delville sits in the centre of the value range, lending the palette a sense of even, sustained light. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. At 7.3%, #573A24 carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. The full value range is 55 units: broad enough to build convincing three-dimensional form. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Taken together, these qualities constitute Jean Delville's chromatic voice - distinctive enough to be read across an entire body of work.