Beret Maroon vs Asmodeus Red

How close are they?

ΔE 18.6, loose: different enough that you should pick on purpose. Asmodeus Red is noticeably lighter, more muted than Beret Maroon.

Can I use Asmodeus Red instead of Beret Maroon?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Asmodeus Red is noticeably lighter, more muted than Beret Maroon.

Can I use Beret Maroon instead of Asmodeus Red?

The same difference applies the other way round: Beret Maroon is noticeably darker, more saturated.

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.