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