ΔE 14.4, fair: the same colour family, but not a straight swap. Primary Cyan is a little darker, more saturated, cooler than Alpha Blue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Primary Cyan is a little darker, more saturated, cooler than Alpha Blue.
The same difference applies the other way round: Alpha Blue is a little lighter, more muted, 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 Alpha Blue on the colour wheel See Primary Cyan on the colour wheel
All matches: Alpha Blue equivalents · Primary Cyan equivalents