How does Traffic grey A (No.7042) by RAL Classic compare with Johnstone's’s closest paints? The nearest match by perceptual distance is Johnstone's Steel Curtain (ΔE 1.6, “near-identical”). 2 more Johnstone's colours sit within ΔE 4 — close enough that the difference is hard to spot once paint’s on the wall. These 4 Johnstone's paints are all priced at £12.36 per litre.
RAL Classic Traffic grey A vs Johnstone's
4 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 |
|---|---|---|---|---|---|
| Steel Curtain | — | 1.6 | near-identical | £12.36 | £2.06 |
| Husky Grey | — | 2.6 | near-identical | £12.36 | £2.06 |
| Shadowy | — | 3.3 | very close | £12.36 | £2.06 |
| Grey Heron | — | 4.0 | very close | £12.36 | £2.06 |