Mid-key values give John Atkinson Grimshaw its characteristic quietness - nothing blazes, nothing disappears. Temperature is cool-dominant, with blue and green families claiming the largest areas. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. The saturated accent, #876E3D, registers at 2.2% - sparse enough to feel like a deliberate surprise. The full value range is 60 units: broad enough to build convincing three-dimensional form. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. In the context of John Atkinson Grimshaw's full range of palettes, group 3 represents one movement in an ongoing chromatic dialogue.