ΔE 31.1, loose: different enough that you should pick on purpose. Crimson is noticeably lighter, much more saturated, warmer than Wonka Violet.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 31). Crimson is noticeably lighter, much more saturated, warmer than Wonka Violet.
The same difference applies the other way round: Wonka Violet is noticeably darker, much 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 Wonka Violet on the colour wheel See Crimson on the colour wheel
All matches: Wonka Violet equivalents · Crimson equivalents