Neptune Seas vs Storm Day

Neptune Seas and Storm Day are both Dulux neutrals. The gap between them is ΔE 10.1 — “similar”. Storm Day is the lighter of the two. Both cost about £14.40 per litre.

	Neptune Seas	Storm Day
Hex	#627775	#838C86
Lightness (L*)	48	57
Price / litre	£14.40	£14.40

Looking across brands instead? See Neptune Seas’s cross-brand matches and cheaper alternatives, or Storm Day’s.