Blue Gray vs Medium Gray

How close are they?

ΔE 6.1, close: similar, with a visible difference side by side. Medium Gray is a little darker, more muted, warmer than Blue Gray.

Can I use Medium Gray instead of Blue Gray?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Medium Gray is a little darker, more muted, warmer than Blue Gray.

Can I use Blue Gray instead of Medium Gray?

The same difference applies the other way round: Blue Gray is a little 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.