IDF Early Sand Yellow vs Stormvermin Fur

How close are they?

ΔE 15.5, loose: different enough that you should pick on purpose. Stormvermin Fur is noticeably darker, more muted, warmer than IDF Early Sand Yellow.

Can I use Stormvermin Fur instead of IDF Early Sand Yellow?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Stormvermin Fur is noticeably darker, more muted, warmer than IDF Early Sand Yellow.

Can I use IDF Early Sand Yellow instead of Stormvermin Fur?

The same difference applies the other way round: IDF Early Sand Yellow is noticeably lighter, more saturated, cooler.

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.