Bright Shadow Flesh vs Beasty Brown

How close are they?

ΔE 22.4, loose: different enough that you should pick on purpose. Beasty Brown is noticeably darker, more saturated, warmer than Bright Shadow Flesh.

Can I use Beasty Brown instead of Bright Shadow Flesh?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Beasty Brown is noticeably darker, more saturated, warmer than Bright Shadow Flesh.

Can I use Bright Shadow Flesh instead of Beasty Brown?

The same difference applies the other way round: Bright Shadow Flesh is noticeably lighter, more muted, cooler.

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.