Armour Grey vs Interior Grey Green

How close are they?

ΔE 9.3, close: similar, with a visible difference side by side. Interior Grey Green is more saturated, warmer than Armour Grey.

Can I use Interior Grey Green instead of Armour Grey?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Interior Grey Green is more saturated, warmer than Armour Grey.

Can I use Armour Grey instead of Interior Grey Green?

The same difference applies the other way round: Armour Grey is 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.