The value structure of Jan Siberechts is mid-key: quiet, controlled, and cohesive. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. #3B3B27 functions as the palette's exclamation mark: highest chroma, lowest percentage (9.3%). The full value range is 66 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 2 of Jan Siberechts's sequence - a single chapter in a chromatic story told across many works.