How does Buttercup Fool 1 by Dulux compare with RAL Classic’s closest paints? The nearest match is RAL Classic Saffron yellow (ΔE 3.0, “near-identical”). 2 more RAL Classic colours sit within ΔE 4 — close enough that the difference is hard to spot once paint’s on the wall.
Dulux Buttercup Fool 1 vs RAL Classic
3 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 |
|---|---|---|---|---|---|
| Saffron yellow | No.1017 | 3.0 | near-identical | — | — |
| Traffic yellow | No.1023 | 3.1 | very close | — | — |
| Signal yellow | No.1003 | 4.0 | very close | — | — |