ΔE 26.4, loose: different enough that you should pick on purpose. Radiant Yellow is a little lighter, much more saturated than Champagne Gold Anodized Aluminum.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 26). Radiant Yellow is a little lighter, much more saturated than Champagne Gold Anodized Aluminum.
The same difference applies the other way round: Champagne Gold Anodized Aluminum is a little 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.
See Champagne Gold Anodized Aluminum on the colour wheel See Radiant Yellow on the colour wheel
All matches: Champagne Gold Anodized Aluminum equivalents · Radiant Yellow equivalents