Tanker Grey vs Grey Blue

How close are they?

ΔE 6.5, close: similar, with a visible difference side by side. Grey Blue is a little lighter, more saturated, warmer than Tanker Grey.

Can I use Grey Blue instead of Tanker Grey?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Grey Blue is a little lighter, more saturated, warmer than Tanker Grey.

Can I use Tanker Grey instead of Grey Blue?

The same difference applies the other way round: Tanker Grey is a little darker, more muted, 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.