Rebel Red vs Cobalt Violet Hue

How close are they?

ΔE 8.2, close: similar, with a visible difference side by side. Cobalt Violet Hue is cooler than Rebel Red.

Can I use Cobalt Violet Hue instead of Rebel Red?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Cobalt Violet Hue is cooler than Rebel Red.

Can I use Rebel Red instead of Cobalt Violet Hue?

The same difference applies the other way round: Rebel Red is 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.