ΔE 21.8, loose: different enough that you should pick on purpose. Abyssal Turquoise is a little darker, much more saturated than Hell Bent for Leather.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Abyssal Turquoise is a little darker, much more saturated than Hell Bent for Leather.
The same difference applies the other way round: Hell Bent for Leather is a little lighter, much more muted.
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 Hell Bent for Leather on the colour wheel See Abyssal Turquoise on the colour wheel
All matches: Hell Bent for Leather equivalents · Abyssal Turquoise equivalents