Orange vs Red

How close are they?

ΔE 11.7, fair: the same colour family, but not a straight swap. Red is a little darker, cooler than Orange.

Can I use Red instead of Orange?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Red is a little darker, cooler than Orange.

Can I use Orange instead of Red?

The same difference applies the other way round: Orange is a little lighter, 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.