Brass Scorpion vs Antique Gold

How close are they?

ΔE 15.7, loose: different enough that you should pick on purpose. Antique Gold is noticeably lighter, more saturated than Brass Scorpion.

Can I use Antique Gold instead of Brass Scorpion?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Antique Gold is noticeably lighter, more saturated than Brass Scorpion.

Can I use Brass Scorpion instead of Antique Gold?

The same difference applies the other way round: Brass Scorpion is noticeably darker, more muted.

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.