ΔE 19.6, loose: different enough that you should pick on purpose. Med. Flesh Tone is noticeably darker, more saturated, warmer than Yellow Sand.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Med. Flesh Tone is noticeably darker, more saturated, warmer than Yellow Sand.
The same difference applies the other way round: Yellow Sand is noticeably lighter, more muted, cooler.
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 Yellow Sand on the colour wheel See Med. Flesh Tone on the colour wheel
All matches: Yellow Sand equivalents · Med. Flesh Tone equivalents