Andreas Achenbach is high-key - luminous, open, and weighted toward light. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. #D5C59A at 26.6% is both the most chromatic and one of the largest colours in the palette - chroma as mass rather than as highlight. From deepest dark to palest light, the palette traverses 58 units of the value scale - a span that creates natural depth. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Palette 7 sits within the larger chromatic argument that Andreas Achenbach's complete body of work advances.