How does Blue Clay (No.SAP0013) by Sanderson compare with Johnstone's’s closest paints? The nearest match by perceptual distance is Johnstone's Grey Frost (ΔE 0.6, “identical”). 4 more Johnstone's colours sit within ΔE 4 — close enough that the difference is hard to spot once paint’s on the wall. Prices for these 5 Johnstone's paints range from £6.14 to £12.36 per litre, against Sanderson Blue Clay at £19.60/L.
Sanderson Blue Clay vs Johnstone's
5 closest Johnstone's matches ranked by ΔE
ΔE (CIEDE2000) is a perceptual distance metric — lower means a closer match. Matches under ΔE 2 are typically indistinguishable; ΔE 2–4 looks “the same” once dry on a wall; ΔE 4–6 is noticeable side-by-side. Always view a sample pot before committing — screen colours and lighting vary.
| Colour | Number | ΔE | Match quality | Price/L | Price/m2 |
|---|---|---|---|---|---|
| Grey Frost | — | 0.6 | identical | £12.36 | £2.06 |
| Maiden Mist | — | 1.1 | near-identical | £12.36 | £2.06 |
| Dusty Pebble | — | 1.3 | near-identical | £12.36 | £2.06 |
| Train | — | 1.7 | near-identical | £12.36 | £2.06 |
| Manhattan Grey | — | 1.7 | near-identical | £6.14 | £1.02 |