French Army Grey-Blue vs IJN Medium Grey

How close are they?

ΔE 5.0, very close: most people won’t see a difference side by side. IJN Medium Grey is more saturated than French Army Grey-Blue.

Can I use IJN Medium Grey instead of French Army Grey-Blue?

Yes, for most jobs. Very close match (ΔE 5). IJN Medium Grey is more saturated than French Army Grey-Blue.

Can I use French Army Grey-Blue instead of IJN Medium Grey?

The same difference applies the other way round: French Army Grey-Blue is more muted.

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.