Mid-key values give Isaac Fuller its characteristic quietness - nothing blazes, nothing disappears. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. Only 12.9% is devoted to #AA744D, yet that small allocation delivers the palette's entire chromatic tension. A value spread of 60 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. This is the light Isaac Fuller preferred, made measurable.