ΔE 10.4, fair: the same colour family, but not a straight swap. Cold Open is a little lighter, warmer than Azure Magic.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Cold Open is a little lighter, warmer than Azure Magic.
The same difference applies the other way round: Azure Magic is a little darker, 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 Magic on the colour wheel See Cold Open on the colour wheel
All matches: Azure Magic equivalents · Cold Open equivalents