Azo Gold vs Beasty Brown

How close are they?

ΔE 19.8, loose: different enough that you should pick on purpose. Beasty Brown is a little darker, much more muted than Azo Gold.

Can I use Beasty Brown instead of Azo Gold?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Beasty Brown is a little darker, much more muted than Azo Gold.

Can I use Azo Gold instead of Beasty Brown?

The same difference applies the other way round: Azo Gold is a little lighter, much more saturated.

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.