ΔE 12.4, fair: the same colour family, but not a straight swap. Blue Green is noticeably darker, warmer than Cursed Blue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Blue Green is noticeably darker, warmer than Cursed Blue.
The same difference applies the other way round: Cursed Blue is noticeably lighter, 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 Cursed Blue on the colour wheel See Blue Green on the colour wheel
All matches: Cursed Blue equivalents · Blue Green equivalents