Stormvermin Fur vs Green Brown

How close are they?

ΔE 16.3, loose: different enough that you should pick on purpose. Green Brown is a little lighter, much more saturated, cooler than Stormvermin Fur.

Can I use Green Brown instead of Stormvermin Fur?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Green Brown is a little lighter, much more saturated, cooler than Stormvermin Fur.

Can I use Stormvermin Fur instead of Green Brown?

The same difference applies the other way round: Stormvermin Fur is a little darker, much more muted, 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.