ΔE 9.7, close: similar, with a visible difference side by side. Earth Green (Early) is a little darker, more muted than Poison Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Earth Green (Early) is a little darker, more muted than Poison Green.
The same difference applies the other way round: Poison Green is a little lighter, more saturated.
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 Poison Green on the colour wheel See Earth Green (Early) on the colour wheel
All matches: Poison Green equivalents · Earth Green (Early) equivalents