ΔE 15.2, loose: different enough that you should pick on purpose. Dwarven Gold is a little lighter, much more saturated than True Brass.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Dwarven Gold is a little lighter, much more saturated than True Brass.
The same difference applies the other way round: True Brass 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 True Brass on the colour wheel See Dwarven Gold on the colour wheel
All matches: True Brass equivalents · Dwarven Gold equivalents