ΔE 14.6, fair: the same colour family, but not a straight swap. Wagram Blue is a little darker, more muted, cooler than Fairy Blood.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Wagram Blue is a little darker, more muted, cooler than Fairy Blood.
The same difference applies the other way round: Fairy Blood is a little lighter, 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 Fairy Blood on the colour wheel See Wagram Blue on the colour wheel
All matches: Fairy Blood equivalents · Wagram Blue equivalents