William Orpen is built on dark foundations, with values clustered toward shadow. Warm hues command this palette; William Orpen favours the reds, oranges, and yellows of firelight and earth. All colours lean toward grey, building depth through value rather than colour punch. At 4.5%, #BD966F carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. From deepest dark to palest light, the palette traverses 65 units of the value scale - a span that creates natural depth. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. Palette 10 sits within the larger chromatic argument that William Orpen's complete body of work advances.