Indigo Shade vs Royal Regatta 1
Indigo Shade and Royal Regatta 1 are both Dulux blues. The gap between them is ΔE 3.8 — “very close”. Indigo Shade is the lighter of the two. Both cost about £10.20 per litre.
| Indigo Shade | Royal Regatta 1 | |
|---|---|---|
| Hex | #315368 | #274C68 |
| Lightness (L*) | 34 | 31 |
| Price / litre | £10.20 | £10.20 |
More Dulux comparisons
Looking across brands instead? See Indigo Shade’s cross-brand matches and cheaper alternatives, or Royal Regatta 1’s.