Shadow Flesh vs Bag of Bones

How close are they?

ΔE 24.7, loose: different enough that you should pick on purpose. Bag of Bones is a little darker, more muted than Shadow Flesh.

Can I use Bag of Bones instead of Shadow Flesh?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Bag of Bones is a little darker, more muted than Shadow Flesh.

Can I use Shadow Flesh instead of Bag of Bones?

The same difference applies the other way round: Shadow Flesh is a little lighter, 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.