ΔE 17.4, loose: different enough that you should pick on purpose. Ink Dark Turquoise is noticeably lighter, much more saturated than Transparent Black.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Ink Dark Turquoise is noticeably lighter, much more saturated than Transparent Black.
The same difference applies the other way round: Transparent Black is noticeably darker, 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 Transparent Black on the colour wheel See Ink Dark Turquoise on the colour wheel
All matches: Transparent Black equivalents · Ink Dark Turquoise equivalents