Willem Koekkoek occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Willem Koekkoek tilts toward cool - blues and silver-greys carry the structural weight. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. Only 6.2% is devoted to #C9BA96, yet that small allocation delivers the palette's entire chromatic tension. The full value range is 55 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. This is palette 4 of Willem Koekkoek's sequence - a single chapter in a chromatic story told across many works.