How does Celestial Blue 2 by Dulux compare with RAL Classic’s closest paints? The nearest match is RAL Classic Pearl gentian blue (ΔE 3.9, “very close”).
Dulux Celestial Blue 2 vs RAL Classic
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 |
|---|---|---|---|---|---|
| Pearl gentian blue | No.5025 | 3.9 | very close | — | — |
| Water blue | No.5021 | 5.5 | close | — | — |