ΔE 19.1, loose: different enough that you should pick on purpose. Blue is more muted, cooler than Enchantress Purple.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Blue is more muted, cooler than Enchantress Purple.
The same difference applies the other way round: Enchantress Purple is more saturated, 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 Enchantress Purple on the colour wheel See Blue on the colour wheel
All matches: Enchantress Purple equivalents · Blue equivalents