Medium Drab vs Bastion Grey

How close are they?

ΔE 13.7, fair: the same colour family, but not a straight swap. Bastion Grey is noticeably lighter, cooler than Medium Drab.

Can I use Bastion Grey instead of Medium Drab?

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

Can I use Medium Drab instead of Bastion Grey?

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