The value structure of Johannes Christiaan Karel Klinkenberg is mid-key: quiet, controlled, and cohesive. 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. #21160D delivers the chromatic peak at only 5.0% - a small shot of colour with outsized visual impact. A value spread of 60 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. This is palette 5 of Johannes Christiaan Karel Klinkenberg's sequence - a single chapter in a chromatic story told across many works.