George Harvey is low-key throughout, a quality associated with Obsidian Sienna - deep shadows dominate the composition. The palette achieves thermal balance - reds and blues, ochres and greens, each holding the other in check. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. #16150F claims 28.7% of the surface, functioning as the work's tonal foundation. #854E32 functions as the palette's exclamation mark: highest chroma, lowest percentage (1.7%). 56 units of value range underpin the palette's structural clarity: the eye always knows where light falls. 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 George Harvey's complete body of work advances.