ΔE 20.0, loose: different enough that you should pick on purpose. Purple is noticeably darker, more saturated, warmer than Violet Coven.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Purple is noticeably darker, more saturated, warmer than Violet Coven.
The same difference applies the other way round: Violet Coven is noticeably lighter, more muted, 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.
See Violet Coven on the colour wheel See Purple on the colour wheel
All matches: Violet Coven equivalents · Purple equivalents