ΔE 13.4, fair: the same colour family, but not a straight swap. Word Bearers Red is more saturated, cooler than Cardinal Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Word Bearers Red is more saturated, cooler than Cardinal Purple.
The same difference applies the other way round: Cardinal Purple is more muted, 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.
See Cardinal Purple on the colour wheel See Word Bearers Red on the colour wheel
All matches: Cardinal Purple equivalents · Word Bearers Red equivalents