Brick Red vs Astorath Red

How close are they?

ΔE 7.2, close: similar, with a visible difference side by side. Astorath Red is a little darker, more muted than Brick Red.

Can I use Astorath Red instead of Brick Red?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Astorath Red is a little darker, more muted than Brick Red.

Can I use Brick Red instead of Astorath Red?

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