ΔE 25.1, loose: different enough that you should pick on purpose. Karak Stone is noticeably lighter, much more saturated, cooler than Hunter's Quiver.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Karak Stone is noticeably lighter, much more saturated, cooler than Hunter's Quiver.
The same difference applies the other way round: Hunter's Quiver is noticeably darker, much more muted, 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 Hunter's Quiver on the colour wheel See Karak Stone on the colour wheel
All matches: Hunter's Quiver equivalents · Karak Stone equivalents