Cobalt Metal vs Cobalt Alchemy

How close are they?

ΔE 12.1, fair: the same colour family, but not a straight swap. Cobalt Alchemy is noticeably lighter than Cobalt Metal.

Can I use Cobalt Alchemy instead of Cobalt Metal?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Cobalt Alchemy is noticeably lighter than Cobalt Metal.

Can I use Cobalt Metal instead of Cobalt Alchemy?

The same difference applies the other way round: Cobalt Metal is noticeably darker.

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.