How does Blue Diamond 3 by Dulux compare with RAL Classic’s closest paints? The nearest match is RAL Classic Turquoise blue (ΔE 3.2, “very close”).
Dulux Blue Diamond 3 vs RAL Classic
Now inside your AI toolConnect free →2 closest RAL Classic 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 |
|---|---|---|---|---|---|
| Turquoise blue | No.5018 | 3.2 | very close | — | — |
| Pastel blue | No.5024 | 7.9 | close | — | — |
Full Dulux → RAL Classic conversion chart — every colour's nearest equivalent