Jan Verbruggen is high in key: pale, luminous, and filled with optical air. Warm and cool are kept in productive tension, creating the kind of chromatic harmony that sustains the eye. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. The most saturated colour, #583F24, is reserved to 6.0% of the surface, where it acts as a focal punctuation. From deepest dark to palest light, the palette traverses 69 units of the value scale - a span that creates natural depth. This is palette 1 of Jan Verbruggen's sequence - a single chapter in a chromatic story told across many works.