allpaintcolours.co.ukHow does French mustard (No.10 D 45) by BS 4800 compare with Johnstone's’s closest paints? The nearest match is Johnstone's Muted Copper (ΔE 1.9, “near-identical”). 3 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 4 Johnstone's paints range from £7.53 to £13.37 per litre.
BS 4800 French mustard vs Johnstone's
Now inside your AI toolConnect free →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 |
|---|---|---|---|---|---|
| Muted Copper | — | 1.9 | near-identical | £13.37 | £2.23 |
| Foxfire Brown | — | 2.0 | near-identical | £13.37 | £2.23 |
| Golden Chestnut | — | 2.6 | near-identical | £7.53 | £1.26 |
| Cinnamon Spice | — | 3.5 | very close | £13.37 | £2.23 |
Compare French mustard with another brand
Full BS 4800 → Johnstone's conversion chart — every colour's nearest equivalent