ΔE 10.1, fair: the same colour family, but not a straight swap. Hydra Turquoise is a little lighter, more saturated, warmer than Cobalt Metal.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Hydra Turquoise is a little lighter, more saturated, warmer than Cobalt Metal.
The same difference applies the other way round: Cobalt Metal is a little darker, more muted, 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 Cobalt Metal on the colour wheel See Hydra Turquoise on the colour wheel
All matches: Cobalt Metal equivalents · Hydra Turquoise equivalents