ΔE 18.5, loose: different enough that you should pick on purpose. Dark Jade is a little darker, more muted, cooler than Waaagh! Flesh.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Dark Jade is a little darker, more muted, cooler than Waaagh! Flesh.
The same difference applies the other way round: Waaagh! Flesh is a little lighter, 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 Waaagh! Flesh on the colour wheel See Dark Jade on the colour wheel
All matches: Waaagh! Flesh equivalents · Dark Jade equivalents