ΔE 14.4, fair: the same colour family, but not a straight swap. Royal Purple is noticeably darker, more muted than Enchantress Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Royal Purple is noticeably darker, more muted than Enchantress Purple.
The same difference applies the other way round: Enchantress Purple is noticeably lighter, 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.
See Enchantress Purple on the colour wheel See Royal Purple on the colour wheel
All matches: Enchantress Purple equivalents · Royal Purple equivalents