ΔE 25.1, loose: different enough that you should pick on purpose. Champagne Gold Anodized Aluminum is noticeably lighter, much more muted than Retributor Armour.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Champagne Gold Anodized Aluminum is noticeably lighter, much more muted than Retributor Armour.
The same difference applies the other way round: Retributor Armour is noticeably darker, much more saturated.
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.
See Retributor Armour on the colour wheel See Champagne Gold Anodized Aluminum on the colour wheel
All matches: Retributor Armour equivalents · Champagne Gold Anodized Aluminum equivalents