The value structure of Carl Hertel is mid-key: quiet, controlled, and cohesive. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. The most saturated colour, #D0B57B, is reserved to 3.3% of the surface, where it acts as a focal punctuation. Value range is moderate at 53 units - enough contrast for legibility, not so much as to fragment the tonal unity. These proportions encode Carl Hertel's instinctive sense of how much of each quality the eye can hold.