ΔE 16.1, loose: different enough that you should pick on purpose. Violet is a little darker, more muted, warmer than Tainted Garden.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Violet is a little darker, more muted, warmer than Tainted Garden.
The same difference applies the other way round: Tainted Garden is a little lighter, more saturated, 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 Tainted Garden on the colour wheel See Violet on the colour wheel
All matches: Tainted Garden equivalents · Violet equivalents