Medium Drab vs Grey RLM02

How close are they?

ΔE 12.4, fair: the same colour family, but not a straight swap. Grey RLM02 is a little lighter, more muted, cooler than Medium Drab.

Can I use Grey RLM02 instead of Medium Drab?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Grey RLM02 is a little lighter, more muted, cooler than Medium Drab.

Can I use Medium Drab instead of Grey RLM02?

The same difference applies the other way round: Medium Drab is a little darker, more saturated, 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.