Auric Armour Gold vs Shiny Gold

How close are they?

ΔE 24.7, loose: different enough that you should pick on purpose. Shiny Gold is noticeably lighter, much more saturated than Auric Armour Gold.

Can I use Shiny Gold instead of Auric Armour Gold?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Shiny Gold is noticeably lighter, much more saturated than Auric Armour Gold.

Can I use Auric Armour Gold instead of Shiny Gold?

The same difference applies the other way round: Auric Armour Gold is noticeably darker, 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.