ΔE 6.5, close: similar, with a visible difference side by side. Bog Moss is more saturated than Greatcoat Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Bog Moss is more saturated than Greatcoat Green.
The same difference applies the other way round: Greatcoat 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 Greatcoat Green on the colour wheel See Bog Moss on the colour wheel
All matches: Greatcoat Green equivalents · Bog Moss equivalents