RAL 7008 Graugrün Opt 2 vs Witch Brew

How close are they?

ΔE 7.3, close: similar, with a visible difference side by side. Witch Brew is a little lighter than RAL 7008 Graugrün Opt 2.

Can I use Witch Brew instead of RAL 7008 Graugrün Opt 2?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Witch Brew is a little lighter than RAL 7008 Graugrün Opt 2.

Can I use RAL 7008 Graugrün Opt 2 instead of Witch Brew?

The same difference applies the other way round: RAL 7008 Graugrün Opt 2 is a little darker.

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.