Aztec Gold vs Retributor Armour

How close are they?

ΔE 22.3, loose: different enough that you should pick on purpose. Retributor Armour is a little darker, much more muted, warmer than Aztec Gold.

Can I use Retributor Armour instead of Aztec Gold?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Retributor Armour is a little darker, much more muted, warmer than Aztec Gold.

Can I use Aztec Gold instead of Retributor Armour?

The same difference applies the other way round: Aztec Gold is a little lighter, much 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.