Emberveil vs Angron Red Clear

How close are they?

ΔE 18.5, loose: different enough that you should pick on purpose. Angron Red Clear is a little darker, much more muted, cooler than Emberveil.

Can I use Angron Red Clear instead of Emberveil?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Angron Red Clear is a little darker, much more muted, cooler than Emberveil.

Can I use Emberveil instead of Angron Red Clear?

The same difference applies the other way round: Emberveil is a little lighter, much more saturated, warmer.

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.