Black Opal vs Slow Swing

Black Opal and Slow Swing are both Dulux blues. The gap between them is ΔE 0.0 — “identical”. Black Opal is the lighter of the two. Both cost about £14.40 per litre.

	Black Opal	Slow Swing
Hex	#2C3241	#2C3241
Lightness (L*)	21	21
Price / litre	£14.40	£14.40

Looking across brands instead? See Black Opal’s cross-brand matches and cheaper alternatives, or Slow Swing’s.