ΔE 7.3, close: similar, with a visible difference side by side. Forest Green is more muted, cooler than Green Ghost.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Forest Green is more muted, cooler than Green Ghost.
The same difference applies the other way round: Green Ghost is more saturated, warmer.
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 Green Ghost on the colour wheel See Forest Green on the colour wheel
All matches: Green Ghost equivalents · Forest Green equivalents