Rebel Red vs Emperor Red

How close are they?

ΔE 12.1, fair: the same colour family, but not a straight swap. Emperor Red is a little lighter, warmer than Rebel Red.

Can I use Emperor Red instead of Rebel Red?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Emperor Red is a little lighter, warmer than Rebel Red.

Can I use Rebel Red instead of Emperor Red?

The same difference applies the other way round: Rebel Red is a little darker, cooler.

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.