How does Indigo Blue (No.SAP0075) by Sanderson compare with RAL Classic’s closest paints? The nearest match by perceptual distance is RAL Classic Slate grey (ΔE 3.8, “very close”). 1 more RAL Classic colour sit within ΔE 4 — close enough that the difference is hard to spot once paint’s on the wall.
Sanderson Indigo Blue 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 |
|---|---|---|---|---|---|
| Slate grey | No.7015 | 3.8 | very close | — | — |
| Graphite grey | No.7024 | 3.8 | very close | — | — |