Blue Lagoon vs Soft Periwinkle

Blue Lagoon and Soft Periwinkle are both Dulux blues. The gap between them is ΔE 4.3 — “very close”. Blue Lagoon is the lighter of the two. Both cost about £14.40 per litre.

	Blue Lagoon	Soft Periwinkle
Hex	#8DB4D9	#97B1DA
Lightness (L*)	72	72
Price / litre	£14.40	£14.40

Looking across brands instead? See Blue Lagoon’s cross-brand matches and cheaper alternatives, or Soft Periwinkle’s.