Atlas Blue vs Sea Urchin 4

Atlas Blue and Sea Urchin 4 are both Dulux teals. The gap between them is ΔE 1.2 — “near-identical”. Sea Urchin 4 is the lighter of the two. Both cost about £14.40 per litre.

	Atlas Blue	Sea Urchin 4
Hex	#B5D3D2	#B9D3D1
Lightness (L*)	82	83
Price / litre	£14.40	£14.40

Looking across brands instead? See Atlas Blue’s cross-brand matches and cheaper alternatives, or Sea Urchin 4’s.