Azure Sky 4 vs Celestial Blue 6
Azure Sky 4 and Celestial Blue 6 are both Dulux blues. The gap between them is ΔE 4.7 — “very close”. Azure Sky 4 is the lighter of the two, and Celestial Blue 6 the warmer. Both cost about £10.20 per litre.
| Azure Sky 4 | Celestial Blue 6 | |
|---|---|---|
| Hex | #8DCCE7 | #8DBDCF |
| Lightness (L*) | 79 | 74 |
| Price / litre | £10.20 | £10.20 |
More Dulux comparisons
Looking across brands instead? See Azure Sky 4’s cross-brand matches and cheaper alternatives, or Celestial Blue 6’s.