ΔE 14.9, fair: the same colour family, but not a straight swap. Leather Brown is noticeably darker than Demigod Flames.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Leather Brown is noticeably darker than Demigod Flames.
The same difference applies the other way round: Demigod Flames is noticeably lighter.
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 Demigod Flames on the colour wheel See Leather Brown on the colour wheel
All matches: Demigod Flames equivalents · Leather Brown equivalents