ΔE 18.3, loose: different enough that you should pick on purpose. Glittering Loot is a little lighter, much more saturated, cooler than Brass.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Glittering Loot is a little lighter, much more saturated, cooler than Brass.
The same difference applies the other way round: Brass is a little darker, much more muted, 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 Brass on the colour wheel See Glittering Loot on the colour wheel
All matches: Brass equivalents · Glittering Loot equivalents