ΔE 13.0, fair: the same colour family, but not a straight swap. Sunset Red is more saturated, warmer than Red Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Sunset Red is more saturated, warmer than Red Purple.
The same difference applies the other way round: Red Purple is 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 Red Purple on the colour wheel See Sunset Red on the colour wheel
All matches: Red Purple equivalents · Sunset Red equivalents