ΔE 24.6, loose: different enough that you should pick on purpose. Bag of Bones is a little darker, more muted than Seraphim 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 Seraphim Flesh.
The same difference applies the other way round: Seraphim 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.
See Seraphim Flesh on the colour wheel See Bag of Bones on the colour wheel
All matches: Seraphim Flesh equivalents · Bag of Bones equivalents