Warlock Purple vs Wonka Violet

How close are they?

ΔE 35.1, loose: different enough that you should pick on purpose. Wonka Violet is noticeably darker, much more muted than Warlock Purple.

Can I use Wonka Violet instead of Warlock Purple?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 35). Wonka Violet is noticeably darker, much more muted than Warlock Purple.

Can I use Warlock Purple instead of Wonka Violet?

The same difference applies the other way round: Warlock Purple is noticeably lighter, much 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.