M-485 Blue-Grey vs Administratum Grey

How close are they?

ΔE 7.7, close: similar, with a visible difference side by side. Administratum Grey is a little lighter, more muted than M-485 Blue-Grey.

Can I use Administratum Grey instead of M-485 Blue-Grey?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Administratum Grey is a little lighter, more muted than M-485 Blue-Grey.

Can I use M-485 Blue-Grey instead of Administratum Grey?

The same difference applies the other way round: M-485 Blue-Grey is a little darker, more saturated.

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.