Darkness anchors William Shiels; light is rationed, creating dramatic contrast rather than open air. Yellow, ochre, sienna: warm hues that William Shiels deploys as the palette's primary energy. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. At 10.7%, #462F1C carries the palette's sharpest chromatic charge: an accent that earns its place precisely because it is withheld. At 62 units of value range, the palette has the tonal breadth to sustain complex spatial readings. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. In the context of William Shiels's full range of palettes, group 5 represents one movement in an ongoing chromatic dialogue.