Low-key values are the structural spine of Joseph Anton Koch, giving it gravity and atmosphere. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. All colours lean toward grey, building depth through value rather than colour punch. #0C0D07 at 37.3% of the palette: an overwhelming presence that pulls all other colours into its gravitational field. #D9DDE7 delivers the chromatic peak at only 3.5% - a small shot of colour with outsized visual impact. The full value range is 74 units: broad enough to build convincing three-dimensional form. Together these qualities place Joseph Anton Koch firmly in the tonal tradition - concerned with mood and atmosphere rather than chromatic display. This is palette 7 of Joseph Anton Koch's sequence - a single chapter in a chromatic story told across many works.