How does Deep Ultramarine (No.LRV 9) by Dulux Heritage compare with Dulux’s closest paints? The nearest match by perceptual distance is Dulux Free Groove (ΔE 3.3, “very close”). 2 more Dulux colours sit within ΔE 4 — close enough that the difference is hard to spot once paint’s on the wall. These 3 Dulux paints are all priced at £10.20 per litre, against Dulux Heritage Deep Ultramarine at £10.40/L.
Dulux Heritage Deep Ultramarine vs Dulux
3 closest Dulux 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 |
|---|---|---|---|---|---|
| Free Groove | — | 3.3 | very close | £10.20 | £1.57 |
| Pen Friend | — | 3.3 | very close | £10.20 | £1.57 |
| Cobalt Embrace | — | 3.4 | very close | £10.20 | £1.57 |