How does Signal black (No.9004) by RAL Classic compare with Dulux’s closest paints? The nearest match is Dulux Rich Black (ΔE 1.2, “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. Prices for these 6 Dulux paints range from £10.80 to £14.40 per litre.
RAL Classic Signal black vs Dulux
Now inside your AI toolConnect free →6 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 |
|---|---|---|---|---|---|
| Rich Black | — | 1.2 | near-identical | £10.80 | £1.66 |
| Night Jewels 1 | — | 1.2 | near-identical | £14.40 | £2.22 |
| Black | — | 1.6 | near-identical | £14.40 | £2.22 |
| Cobalt Night | — | 4.9 | very close | £14.40 | £2.22 |
| Black Stillness | — | 4.9 | very close | £14.40 | £2.22 |
| Lights Out | — | 4.9 | very close | £14.40 | £2.22 |
Compare Signal black with another brand
Full RAL Classic → Dulux conversion chart — every colour's nearest equivalent