allpaintcolours.co.ukHow does Delphinium Blue (No.18 E 51) by BS 4800 compare with Dulux’s closest paints? The nearest match is Dulux Hawaiian Blue 5 (ΔE 2.8, “near-identical”). 1 more Dulux colour sit within ΔE 4 — close enough that the difference is hard to spot once paint’s on the wall. These 4 Dulux paints are all priced at £14.40 per litre.
BS 4800 Delphinium Blue vs Dulux
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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 |
|---|---|---|---|---|---|
| Hawaiian Blue 5 | — | 2.8 | near-identical | £14.40 | £2.22 |
| Azure Fusion 5 | — | 3.6 | very close | £14.40 | £2.22 |
| Summer Medley 1 | — | 4.1 | very close | £14.40 | £2.22 |
| Azure Fusion 6 | — | 4.2 | very close | £14.40 | £2.22 |
Compare Delphinium Blue with another brand
Full BS 4800 → Dulux conversion chart — every colour's nearest equivalent