Low-key values are the structural spine of John Riley, giving it gravity and atmosphere. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. At 31.0%, #21201D functions less as a colour accent and more as a complete atmospheric environment. The most saturated colour, #AB8565, is reserved to 1.8% of the surface, where it acts as a focal punctuation. The value range spans 82 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. This tonal restraint is characteristic of the John Riley approach: colour serves light, not the reverse. In the context of John Riley's full range of palettes, group 1 represents one movement in an ongoing chromatic dialogue.