How does Proper Blue (No.No.67) by Mylands compare with Dulux’s closest paints? The nearest match by perceptual distance is Dulux Indigo Shade (ΔE 1.7, “near-identical”). 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 Mylands Proper Blue at £27.20/L.
Mylands Proper Blue 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 |
|---|---|---|---|---|---|
| Indigo Shade | — | 1.7 | near-identical | £10.20 | £1.57 |
| Royal Regatta 1 | — | 2.2 | near-identical | £10.20 | £1.57 |
| Night Seas | — | 2.9 | near-identical | £10.20 | £1.57 |