ΔE 18.2, loose: different enough that you should pick on purpose. Wagram Blue is more muted, cooler than Purple Vanity.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Wagram Blue is more muted, cooler than Purple Vanity.
The same difference applies the other way round: Purple Vanity is more saturated, warmer.
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 Wagram Blue on the colour wheel
All matches: Purple Vanity equivalents · Wagram Blue equivalents