August von Pettenkofen occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Cool tones set the register here - the blues and greens easily outweigh any warm accents. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. #876836 delivers the chromatic peak at only 13.2% - a small shot of colour with outsized visual impact. The value range of 44 units sits in the comfortable middle: enough depth, enough light, neither extreme. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is palette 4 of August von Pettenkofen's sequence - a single chapter in a chromatic story told across many works.