Dark Eternal Night vs Abyssal Turquoise

How close are they?

ΔE 14.4, fair: the same colour family, but not a straight swap. Abyssal Turquoise is a little lighter, much more saturated than Dark Eternal Night.

Can I use Abyssal Turquoise instead of Dark Eternal Night?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Abyssal Turquoise is a little lighter, much more saturated than Dark Eternal Night.

Can I use Dark Eternal Night instead of Abyssal Turquoise?

The same difference applies the other way round: Dark Eternal Night is a little 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.