ΔE 10.7, fair: the same colour family, but not a straight swap. Plague Toad Venom is a little darker, more saturated, warmer than Feral Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Plague Toad Venom is a little darker, more saturated, warmer than Feral Green.
The same difference applies the other way round: Feral Green is a little lighter, more muted, 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 Feral Green on the colour wheel See Plague Toad Venom on the colour wheel
All matches: Feral Green equivalents · Plague Toad Venom equivalents