Aztec Gold vs Green Sun

How close are they?

ΔE 21.0, loose: different enough that you should pick on purpose. Green Sun is noticeably lighter, more muted, warmer than Aztec Gold.

Can I use Green Sun instead of Aztec Gold?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Green Sun is noticeably lighter, more muted, warmer than Aztec Gold.

Can I use Aztec Gold instead of Green Sun?

The same difference applies the other way round: Aztec Gold is noticeably darker, more saturated, cooler.

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.