Turquoise vs Etherium Blue

How close are they?

ΔE 18.1, loose: different enough that you should pick on purpose. Etherium Blue is a little darker, more muted, warmer than Turquoise.

Can I use Etherium Blue instead of Turquoise?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Etherium Blue is a little darker, more muted, warmer than Turquoise.

Can I use Turquoise instead of Etherium Blue?

The same difference applies the other way round: Turquoise is a little lighter, 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.