Jacques d'Arthois distributes its values across the middle register, creating harmony without high contrast. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. Only 10.0% is devoted to #B29B6E, yet that small allocation delivers the palette's entire chromatic tension. The full value range is 67 units: broad enough to build convincing three-dimensional form. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. Taken together, these qualities constitute Jacques d'Arthois's chromatic voice - distinctive enough to be read across an entire body of work.