French Blue vs Stormfang

How close are they?

ΔE 6.4, close: similar, with a visible difference side by side. Stormfang is a little darker, cooler than French Blue.

Can I use Stormfang instead of French Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Stormfang is a little darker, cooler than French Blue.

Can I use French Blue instead of Stormfang?

The same difference applies the other way round: French Blue is a little lighter, 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.