How does Double Quartz Grey (No.ZOP0030) by Zoffany compare with Johnstone's’s closest paints? The nearest match by perceptual distance is Johnstone's Amethyst Haze (ΔE 2.5, “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. These 5 Johnstone's paints are all priced at £12.36 per litre, against Zoffany Double Quartz Grey at £22.00/L.
Zoffany Double Quartz Grey 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 |
|---|---|---|---|---|---|
| Amethyst Haze | — | 2.5 | near-identical | £12.36 | £2.06 |
| Grey Suit | — | 2.7 | near-identical | £12.36 | £2.06 |
| Ufo | — | 3.2 | very close | £12.36 | £2.06 |
| Quicksilver | — | 3.4 | very close | £12.36 | £2.06 |
| Gosling Grey | — | 3.7 | very close | £12.36 | £2.06 |