ΔE 13.4, fair: the same colour family, but not a straight swap. Armor Green is a little darker, more muted, warmer than Azure.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Armor Green is a little darker, more muted, warmer than Azure.
The same difference applies the other way round: Azure is a little lighter, 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 Azure on the colour wheel See Armor Green on the colour wheel
All matches: Azure equivalents · Armor Green equivalents