Astorath Red vs C.P. Cadmium Red Dark

How close are they?

ΔE 8.9, close: similar, with a visible difference side by side. C.P. Cadmium Red Dark is a little darker, more saturated than Astorath Red.

Can I use C.P. Cadmium Red Dark instead of Astorath Red?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). C.P. Cadmium Red Dark is a little darker, more saturated than Astorath Red.

Can I use Astorath Red instead of C.P. Cadmium Red Dark?

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