Dark Gull Grey FS 36231 vs USAF Medium Gray

How close are they?

ΔE 5.2, very close: most people won’t see a difference side by side. USAF Medium Gray is a little darker than Dark Gull Grey FS 36231.

Can I use USAF Medium Gray instead of Dark Gull Grey FS 36231?

Yes, for most jobs. Very close match (ΔE 5). USAF Medium Gray is a little darker than Dark Gull Grey FS 36231.

Can I use Dark Gull Grey FS 36231 instead of USAF Medium Gray?

The same difference applies the other way round: Dark Gull Grey FS 36231 is a little lighter.

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.