How does Oakeley Slate (No.SAP0104) by Sanderson compare with Johnstone's’s closest paints? The nearest match by perceptual distance is Johnstone's Purple Symphony (ΔE 2.8, “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 5 Johnstone's paints are all priced at £12.36 per litre, against Sanderson Oakeley Slate at £19.60/L.
Sanderson Oakeley Slate 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 |
|---|---|---|---|---|---|
| Purple Symphony | — | 2.8 | near-identical | £12.36 | £2.06 |
| Flannel Pajamas | — | 3.1 | very close | £12.36 | £2.06 |
| Bonfire Smoke | — | 3.9 | very close | £12.36 | £2.06 |
| Magic Dust | — | 4.1 | very close | £12.36 | £2.06 |
| Victorian Pewter | — | 4.8 | very close | £12.36 | £2.06 |