ΔE 7.2, close: similar, with a visible difference side by side. Abyssal Turquoise is more muted, warmer than Abyssal Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Abyssal Turquoise is more muted, warmer than Abyssal Blue.
The same difference applies the other way round: Abyssal Blue is more saturated, cooler.
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 Abyssal Blue on the colour wheel See Abyssal Turquoise on the colour wheel
All matches: Abyssal Blue equivalents · Abyssal Turquoise equivalents