Rebel Red vs Red Purple

How close are they?

ΔE 13.5, fair: the same colour family, but not a straight swap. Red Purple is noticeably lighter, more saturated than Rebel Red.

Can I use Red Purple instead of Rebel Red?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Red Purple is noticeably lighter, more saturated than Rebel Red.

Can I use Rebel Red instead of Red Purple?

The same difference applies the other way round: Rebel Red is noticeably darker, more muted.

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.