ΔE 11.8, fair: the same colour family, but not a straight swap. Raw Sienna is a little lighter, more saturated, warmer than Bloodreaver Flesh.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Raw Sienna is a little lighter, more saturated, warmer than Bloodreaver Flesh.
The same difference applies the other way round: Bloodreaver Flesh is a little darker, 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.
See Bloodreaver Flesh on the colour wheel See Raw Sienna on the colour wheel
All matches: Bloodreaver Flesh equivalents · Raw Sienna equivalents