Waaagh! Flesh vs Dark Evergreen

How close are they?

ΔE 6.2, close: similar, with a visible difference side by side. Dark Evergreen is a little darker than Waaagh! Flesh.

Can I use Dark Evergreen instead of Waaagh! Flesh?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Dark Evergreen is a little darker than Waaagh! Flesh.

Can I use Waaagh! Flesh instead of Dark Evergreen?

The same difference applies the other way round: Waaagh! Flesh is a little lighter.

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.