ΔE 14.3, fair: the same colour family, but not a straight swap. Red Purple is more saturated, warmer than Fairy Pink.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Red Purple is more saturated, warmer than Fairy Pink.
The same difference applies the other way round: Fairy Pink 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 Fairy Pink on the colour wheel See Red Purple on the colour wheel
All matches: Fairy Pink equivalents · Red Purple equivalents