ΔE 6.4, close: similar, with a visible difference side by side. Angel Green is more saturated than Orc Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Angel Green is more saturated than Orc Green.
The same difference applies the other way round: Orc Green is more muted.
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 Orc Green on the colour wheel See Angel Green on the colour wheel
All matches: Orc Green equivalents · Angel Green equivalents