Blue Diamond 4 vs Crystal Surprise 1

Blue Diamond 4 and Crystal Surprise 1 are both Dulux teals. The gap between them is ΔE 6.7 — “close”. Crystal Surprise 1 is the lighter of the two. Both cost about £14.40 per litre.

	Blue Diamond 4	Crystal Surprise 1
Hex	#00939F	#00A4A6
Lightness (L*)	55	61
Price / litre	£14.40	£14.40

Looking across brands instead? See Blue Diamond 4’s cross-brand matches and cheaper alternatives, or Crystal Surprise 1’s.