Bison-Beast vs USAF Tan

How close are they?

ΔE 18.0, loose: different enough that you should pick on purpose. USAF Tan is a little darker, much more saturated than Bison-Beast.

Can I use USAF Tan instead of Bison-Beast?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). USAF Tan is a little darker, much more saturated than Bison-Beast.

Can I use Bison-Beast instead of USAF Tan?

The same difference applies the other way round: Bison-Beast is a little lighter, much 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.