ΔE 16.2, loose: different enough that you should pick on purpose. Elven Flesh is a little lighter, much more saturated than Ancient Stone.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Elven Flesh is a little lighter, much more saturated than Ancient Stone.
The same difference applies the other way round: Ancient Stone is a little darker, much more muted.
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 Ancient Stone on the colour wheel See Elven Flesh on the colour wheel
All matches: Ancient Stone equivalents · Elven Flesh equivalents