Galvanized Steel vs Arctic Blue (Metal.)

How close are they?

ΔE 18.2, loose: different enough that you should pick on purpose. Arctic Blue (Metal.) is noticeably lighter, more muted than Galvanized Steel.

Can I use Arctic Blue (Metal.) instead of Galvanized Steel?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Arctic Blue (Metal.) is noticeably lighter, more muted than Galvanized Steel.

Can I use Galvanized Steel instead of Arctic Blue (Metal.)?

The same difference applies the other way round: Galvanized Steel is noticeably darker, more saturated.

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.