ΔE 12.8, fair: the same colour family, but not a straight swap. Red Leather is more saturated, warmer than Mulled Berry.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Red Leather is more saturated, warmer than Mulled Berry.
The same difference applies the other way round: Mulled Berry is more muted, cooler.
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 Mulled Berry on the colour wheel See Red Leather on the colour wheel
All matches: Mulled Berry equivalents · Red Leather equivalents