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