ΔE 10.2, fair: the same colour family, but not a straight swap. Scarlet is a little lighter, more muted than Emberveil.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Scarlet is a little lighter, more muted than Emberveil.
The same difference applies the other way round: Emberveil is a little darker, 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 Emberveil on the colour wheel See Scarlet on the colour wheel
All matches: Emberveil equivalents · Scarlet equivalents