Blue 17 vs Blue 20

Blue 17 (No.blue-17) and Blue 20 (No.blue-20) are both Lick blues. The gap between them is ΔE 35.2 — “similar”. Blue 17 is the lighter of the two, and Blue 20 the warmer. Both cost about £16.40 per litre.

	Blue 17	Blue 20
Hex	#8398A5	#283942
Lightness (L*)	62	23
Code	blue-17	blue-20
Price / litre	£16.40	£16.40

Looking across brands instead? See Blue 17’s cross-brand matches and cheaper alternatives, or Blue 20’s.