Armour Grey vs Light Feldgrau

How close are they?

ΔE 9.0, close: similar, with a visible difference side by side. Light Feldgrau is a little darker, more saturated, warmer than Armour Grey.

Can I use Light Feldgrau instead of Armour Grey?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Light Feldgrau is a little darker, more saturated, warmer than Armour Grey.

Can I use Armour Grey instead of Light Feldgrau?

The same difference applies the other way round: Armour Grey is a little lighter, 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.