ΔE 45.2, loose: different enough that you should pick on purpose. Seraphim Flesh is a little lighter, much more muted, warmer than Bloodmoon Red.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 45). Seraphim Flesh is a little lighter, much more muted, warmer than Bloodmoon Red.
The same difference applies the other way round: Bloodmoon Red is a little darker, much more saturated, 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.
See Bloodmoon Red on the colour wheel See Seraphim Flesh on the colour wheel
All matches: Bloodmoon Red equivalents · Seraphim Flesh equivalents