ΔE 14.9, fair: the same colour family, but not a straight swap. Sanguine Scarlet is noticeably darker, more muted than Astorath Red.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Sanguine Scarlet is noticeably darker, more muted than Astorath Red.
The same difference applies the other way round: Astorath Red is noticeably 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 Astorath Red on the colour wheel See Sanguine Scarlet on the colour wheel
All matches: Astorath Red equivalents · Sanguine Scarlet equivalents