Henry Nelson O'Neil distributes its values across the middle register, creating harmony without high contrast. Cool hues prevail: blues, greens, and greys anchor the palette's emotional temperature. All colours lean toward grey, building depth through value rather than colour punch. #2A2723 at 25.2% of the palette: an overwhelming presence that pulls all other colours into its gravitational field. The highest-chroma note - #B38A52 - appears at just 4.8%, deployed as a precision accent against the quieter ground. The value range spans 66 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Palette 1 sits within the larger chromatic argument that Henry Nelson O'Neil's complete body of work advances.