French Army Grey-Blue vs Combat Fatigues

How close are they?

ΔE 6.9, close: similar, with a visible difference side by side. Combat Fatigues is a little lighter than French Army Grey-Blue.

Can I use Combat Fatigues instead of French Army Grey-Blue?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Combat Fatigues is a little lighter than French Army Grey-Blue.

Can I use French Army Grey-Blue instead of Combat Fatigues?

The same difference applies the other way round: French Army Grey-Blue is a little darker.

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.