Rudolf Koller distributes its values across the middle register, creating harmony without high contrast. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Chroma is moderate: colours carry enough saturation to be read as colour, but the palette stops well short of garish intensity. The most saturated colour, #7E401E, is reserved to 3.9% of the surface, where it acts as a focal punctuation. Value range is moderate at 49 units - enough contrast for legibility, not so much as to fragment the tonal unity. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. This is palette 6 of Rudolf Koller's sequence - a single chapter in a chromatic story told across many works.