Karl Wilhelm Diefenbach is built on dark foundations, with values clustered toward shadow. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. The dominant colour, #151614, takes 31.1% of the total area, establishing the overall mood before any other hue is introduced. #9A6926 functions as the palette's exclamation mark: highest chroma, lowest percentage (0.6%). The value range of 36 units sits in the comfortable middle: enough depth, enough light, neither extreme. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. In the context of Karl Wilhelm Diefenbach's full range of palettes, group 5 represents one movement in an ongoing chromatic dialogue.