How does Sea foam (No.12 B 15) by BS 4800 compare with Johnstone's’s closest paints? The nearest match by perceptual distance is Johnstone's Antique Cream (ΔE 1.3, “near-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.
BS 4800 Sea foam 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 |
|---|---|---|---|---|---|
| Antique Cream | — | 1.3 | near-identical | £6.14 | £1.02 |
| Just Perfect | — | 1.7 | near-identical | £12.36 | £2.06 |
| Spun Yarn | — | 1.7 | near-identical | £12.36 | £2.06 |
| Jewel White | — | 1.7 | near-identical | £12.36 | £2.06 |
| Pancake Batter | — | 1.7 | near-identical | £12.36 | £2.06 |