William Shiels keeps values measured and balanced, a hallmark of tonal restraint. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. At 40.4%, #080807 functions less as a colour accent and more as a complete atmospheric environment. #3D1D06 delivers the chromatic peak at only 4.5% - a small shot of colour with outsized visual impact. 82 units of value range underpin the palette's structural clarity: the eye always knows where light falls. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. Palette 4 sits within the larger chromatic argument that William Shiels's complete body of work advances.