How does Turquoise blue (No.5018) by RAL Classic compare with Johnstone's’s closest paints? The nearest match by perceptual distance is Johnstone's Safe Harbor (ΔE 2.6, “near-identical”). These 4 Johnstone's paints are all priced at £12.36 per litre.
RAL Classic Turquoise blue 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 |
|---|---|---|---|---|---|
| Safe Harbor | — | 2.6 | near-identical | £12.36 | £2.06 |
| Diving Trip | — | 4.4 | very close | £12.36 | £2.06 |
| Sea Fantasy | — | 5.8 | close | £12.36 | £2.06 |
| Acapulco Cliffs | — | 5.8 | close | £12.36 | £2.06 |