Bison-Beast vs Light Brown

How close are they?

ΔE 17.0, loose: different enough that you should pick on purpose. Light Brown is a little darker, more saturated, cooler than Bison-Beast.

Can I use Light Brown instead of Bison-Beast?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Light Brown is a little darker, more saturated, cooler than Bison-Beast.

Can I use Bison-Beast instead of Light Brown?

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