ΔE 12.9, fair: the same colour family, but not a straight swap. Wyvern Green is a little lighter, more muted, cooler than Tainted Garden.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Wyvern Green is a little lighter, more muted, cooler than Tainted Garden.
The same difference applies the other way round: Tainted Garden is a little darker, more saturated, 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.
See Tainted Garden on the colour wheel See Wyvern Green on the colour wheel
All matches: Tainted Garden equivalents · Wyvern Green equivalents