ΔE 18.6, loose: different enough that you should pick on purpose. Wagram Blue is a little darker, cooler than Azure.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Wagram Blue is a little darker, cooler than Azure.
The same difference applies the other way round: Azure is a little lighter, 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 Azure on the colour wheel See Wagram Blue on the colour wheel
All matches: Azure equivalents · Wagram Blue equivalents