ΔE 12.1, fair: the same colour family, but not a straight swap. Intermediate Green is a little lighter, more muted, warmer than Waaagh! Flesh.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Intermediate Green is a little lighter, more muted, warmer than Waaagh! Flesh.
The same difference applies the other way round: Waaagh! Flesh is a little darker, more saturated, 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 Waaagh! Flesh on the colour wheel See Intermediate Green on the colour wheel
All matches: Waaagh! Flesh equivalents · Intermediate Green equivalents