ΔE 12.5, fair: the same colour family, but not a straight swap. Abyssal Turquoise is noticeably darker, cooler than Smoked Blue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Abyssal Turquoise is noticeably darker, cooler than Smoked Blue.
The same difference applies the other way round: Smoked Blue is noticeably lighter, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Smoked Blue on the colour wheel See Abyssal Turquoise on the colour wheel
All matches: Smoked Blue equivalents · Abyssal Turquoise equivalents