ΔE 13.9, fair: the same colour family, but not a straight swap. Warm Flesh is a little lighter, more muted, cooler than Hearthborn.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Warm Flesh is a little lighter, more muted, cooler than Hearthborn.
The same difference applies the other way round: Hearthborn is a little darker, 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 Hearthborn on the colour wheel See Warm Flesh on the colour wheel
All matches: Hearthborn equivalents · Warm Flesh equivalents