ΔE 10.8, fair: the same colour family, but not a straight swap. Pastel Blue is a little lighter, more saturated, cooler than Cold Armour.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Pastel Blue is a little lighter, more saturated, cooler than Cold Armour.
The same difference applies the other way round: Cold Armour is a little darker, 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 Cold Armour on the colour wheel See Pastel Blue on the colour wheel
All matches: Cold Armour equivalents · Pastel Blue equivalents