Ardennes Green vs Medium Olive

How close are they?

ΔE 11.1, fair: the same colour family, but not a straight swap. Medium Olive is noticeably darker, cooler than Ardennes Green.

Can I use Medium Olive instead of Ardennes Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Medium Olive is noticeably darker, cooler than Ardennes Green.

Can I use Ardennes Green instead of Medium Olive?

The same difference applies the other way round: Ardennes Green is noticeably lighter, warmer.

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.