ΔE 7.1, close: similar, with a visible difference side by side. Ochre is a little lighter, more muted than Poison Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Ochre is a little lighter, more muted than Poison Green.
The same difference applies the other way round: Poison Green is a little darker, 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 Ochre on the colour wheel
All matches: Poison Green equivalents · Ochre equivalents