Blue vs Royal Regatta 3
Blue and Royal Regatta 3 are both Dulux blues. The gap between them is ΔE 3.0 — “very close”. Blue is the lighter of the two.
| Blue | Royal Regatta 3 | |
|---|---|---|
| Hex | #4376A3 | #2676AD |
| Lightness (L*) | 48 | 47 |
| Price / litre | — | £10.20 |
More Dulux comparisons
Looking across brands instead? See Blue’s cross-brand matches and cheaper alternatives, or Royal Regatta 3’s.