Drab Green vs Dirty Grey

How close are they?

ΔE 14.4, fair: the same colour family, but not a straight swap. Dirty Grey is noticeably lighter, warmer than Drab Green.

Can I use Dirty Grey instead of Drab Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Dirty Grey is noticeably lighter, warmer than Drab Green.

Can I use Drab Green instead of Dirty Grey?

The same difference applies the other way round: Drab Green is noticeably darker, 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.