ΔE 8.8, close: similar, with a visible difference side by side. Wizards Orb is a little darker, warmer than Cold Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Wizards Orb is a little darker, warmer than Cold Green.
The same difference applies the other way round: Cold Green is a little lighter, 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 Cold Green on the colour wheel See Wizards Orb on the colour wheel
All matches: Cold Green equivalents · Wizards Orb equivalents