Ultimate Cup of Coffee vs USA Olive Drab

How close are they?

ΔE 6.0, close: similar, with a visible difference side by side. USA Olive Drab is a little lighter, more saturated than Ultimate Cup of Coffee.

Can I use USA Olive Drab instead of Ultimate Cup of Coffee?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). USA Olive Drab is a little lighter, more saturated than Ultimate Cup of Coffee.

Can I use Ultimate Cup of Coffee instead of USA Olive Drab?

The same difference applies the other way round: Ultimate Cup of Coffee is a little darker, more muted.

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.