ΔE 9.4, close: similar, with a visible difference side by side. Waaagh! Flesh is more muted than Fern Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Waaagh! Flesh is more muted than Fern Green.
The same difference applies the other way round: Fern Green is 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 Fern Green on the colour wheel See Waaagh! Flesh on the colour wheel
All matches: Fern Green equivalents · Waaagh! Flesh equivalents