ΔE 13.8, fair: the same colour family, but not a straight swap. Seraph Red is a little darker, more muted, warmer than Dragon Blood.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Seraph Red is a little darker, more muted, warmer than Dragon Blood.
The same difference applies the other way round: Dragon Blood is a little lighter, 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 Dragon Blood on the colour wheel See Seraph Red on the colour wheel
All matches: Dragon Blood equivalents · Seraph Red equivalents