Rhinox Hide vs Black Red

How close are they?

ΔE 8.3, close: similar, with a visible difference side by side. Black Red is a little darker, cooler than Rhinox Hide.

Can I use Black Red instead of Rhinox Hide?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Black Red is a little darker, cooler than Rhinox Hide.

Can I use Rhinox Hide instead of Black Red?

The same difference applies the other way round: Rhinox Hide is a little lighter, 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.