Angron Red Clear vs Orange Red

How close are they?

ΔE 6.6, close: similar, with a visible difference side by side. Orange Red is a little lighter than Angron Red Clear.

Can I use Orange Red instead of Angron Red Clear?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Orange Red is a little lighter than Angron Red Clear.

Can I use Angron Red Clear instead of Orange Red?

The same difference applies the other way round: Angron Red Clear is a little darker.

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.