Stormfang vs Grey Blue

How close are they?

ΔE 6.0, very close: most people won’t see a difference side by side. Grey Blue is a little lighter, warmer than Stormfang.

Can I use Grey Blue instead of Stormfang?

Yes, for most jobs. Very close match (ΔE 6). Grey Blue is a little lighter, warmer than Stormfang.

Can I use Stormfang instead of Grey Blue?

The same difference applies the other way round: Stormfang is a little darker, 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.