Dark Bronze vs Gold

How close are they?

ΔE 19.3, loose: different enough that you should pick on purpose. Gold is noticeably lighter, much more saturated, cooler than Dark Bronze.

Can I use Gold instead of Dark Bronze?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Gold is noticeably lighter, much more saturated, cooler than Dark Bronze.

Can I use Dark Bronze instead of Gold?

The same difference applies the other way round: Dark Bronze is noticeably darker, much more muted, 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.