Wild Rider Red vs Phoenix Red

How close are they?

ΔE 16.3, loose: different enough that you should pick on purpose. Phoenix Red is a little darker, much more muted than Wild Rider Red.

Can I use Phoenix Red instead of Wild Rider Red?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Phoenix Red is a little darker, much more muted than Wild Rider Red.

Can I use Wild Rider Red instead of Phoenix Red?

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

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.