How does Blue (No.20 E 53) by BS 4800 compare with RAL Classic’s closest paints? The nearest match by perceptual distance is RAL Classic Sky blue (ΔE 2.4, “near-identical”).
BS 4800 Blue vs RAL Classic
1 closest RAL Classic match 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 |
|---|---|---|---|---|---|
| Sky blue | No.5015 | 2.4 | near-identical | — | — |