Low-key values are the structural spine of Carolus-Duran, giving it gravity and atmosphere. The palette achieves thermal balance - reds and blues, ochres and greens, each holding the other in check. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. A single dominant - #211B0B at 25.9% - sets the character of the whole composition. At 4.2%, #644629 carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. The value range spans 65 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. Palette 8 sits within the larger chromatic argument that Carolus-Duran's complete body of work advances.