Dull Dark Green FS 34092 vs Regiment Grey

How close are they?

ΔE 10.9, fair: the same colour family, but not a straight swap. Regiment Grey is a little lighter than Dull Dark Green FS 34092.

Can I use Regiment Grey instead of Dull Dark Green FS 34092?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Regiment Grey is a little lighter than Dull Dark Green FS 34092.

Can I use Dull Dark Green FS 34092 instead of Regiment Grey?

The same difference applies the other way round: Dull Dark Green FS 34092 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.