Druchii Violet vs Vicious Purple

How close are they?

ΔE 23.0, loose: different enough that you should pick on purpose. Vicious Purple is noticeably lighter, more saturated, cooler than Druchii Violet.

Can I use Vicious Purple instead of Druchii Violet?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Vicious Purple is noticeably lighter, more saturated, cooler than Druchii Violet.

Can I use Druchii Violet instead of Vicious Purple?

The same difference applies the other way round: Druchii Violet is noticeably darker, more muted, 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.