ΔE 21.9, loose: different enough that you should pick on purpose. Count of Tuscany is noticeably darker, cooler than Hearthborn.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Count of Tuscany is noticeably darker, cooler than Hearthborn.
The same difference applies the other way round: Hearthborn is noticeably lighter, 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 Count of Tuscany on the colour wheel
All matches: Hearthborn equivalents · Count of Tuscany equivalents