ΔE 19.1, loose: different enough that you should pick on purpose. Snake Fang is a little lighter, more muted, cooler than Hearthborn.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Snake Fang 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 Snake Fang on the colour wheel
All matches: Hearthborn equivalents · Snake Fang equivalents