The Fang vs Intermediate Blue

How close are they?

ΔE 9.7, close: similar, with a visible difference side by side. Intermediate Blue is a little darker, more muted, cooler than The Fang.

Can I use Intermediate Blue instead of The Fang?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Intermediate Blue is a little darker, more muted, cooler than The Fang.

Can I use The Fang instead of Intermediate Blue?

The same difference applies the other way round: The Fang is a little lighter, more saturated, 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.