ΔE 18.6, loose: different enough that you should pick on purpose. Brazen Copper is much more muted, cooler than Copper.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Brazen Copper is much more muted, cooler than Copper.
The same difference applies the other way round: Copper is much more saturated, warmer.
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 Copper on the colour wheel See Brazen Copper on the colour wheel
All matches: Copper equivalents · Brazen Copper equivalents