ΔE 13.5, fair: the same colour family, but not a straight swap. Thornwood Green is noticeably lighter than Tainted Garden.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Thornwood Green is noticeably lighter than Tainted Garden.
The same difference applies the other way round: Tainted Garden is noticeably darker.
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 Thornwood Green on the colour wheel
All matches: Tainted Garden equivalents · Thornwood Green equivalents