Iron Hue vs Imperial Gold

How close are they?

ΔE 51.1, loose: different enough that you should pick on purpose. Imperial Gold is noticeably darker, much more saturated than Iron Hue.

Can I use Imperial Gold instead of Iron Hue?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 51). Imperial Gold is noticeably darker, much more saturated than Iron Hue.

Can I use Iron Hue instead of Imperial Gold?

The same difference applies the other way round: Iron Hue is noticeably lighter, much 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.