ΔE 10.7, fair: the same colour family, but not a straight swap. Cobalt Metal is a little darker, more saturated, cooler than Cold Steel.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Cobalt Metal is a little darker, more saturated, cooler than Cold Steel.
The same difference applies the other way round: Cold Steel 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 Cold Steel on the colour wheel See Cobalt Metal on the colour wheel
All matches: Cold Steel equivalents · Cobalt Metal equivalents