Wild Rider Red vs Red Madder

How close are they?

ΔE 6.9, close: similar, with a visible difference side by side. Red Madder is a little darker than Wild Rider Red.

Can I use Red Madder instead of Wild Rider Red?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Red Madder is a little darker than Wild Rider Red.

Can I use Wild Rider Red instead of Red Madder?

The same difference applies the other way round: Wild Rider Red is a little lighter.

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.