Stormvermin Fur vs Medium Grey

How close are they?

ΔE 6.3, close: similar, with a visible difference side by side. Medium Grey is a little lighter than Stormvermin Fur.

Can I use Medium Grey instead of Stormvermin Fur?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Medium Grey is a little lighter than Stormvermin Fur.

Can I use Stormvermin Fur instead of Medium Grey?

The same difference applies the other way round: Stormvermin Fur 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.