ΔE 5.7, very close: most people won’t see a difference side by side. Gunmetal Blue is a little darker, cooler than Cobalt Metal.
Yes, for most jobs. Very close match (ΔE 6). Gunmetal Blue is a little darker, cooler than Cobalt Metal.
The same difference applies the other way round: Cobalt Metal is a little lighter, 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 Cobalt Metal on the colour wheel See Gunmetal Blue on the colour wheel
All matches: Cobalt Metal equivalents · Gunmetal Blue equivalents