ΔE 14.5, fair: the same colour family, but not a straight swap. Twilight Rose is a little lighter, more muted, warmer than Purple Vanity.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Twilight Rose is a little lighter, more muted, warmer than Purple Vanity.
The same difference applies the other way round: Purple Vanity is a little darker, 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 Purple Vanity on the colour wheel See Twilight Rose on the colour wheel
All matches: Purple Vanity equivalents · Twilight Rose equivalents