ΔE 16.8, loose: different enough that you should pick on purpose. Natural Flesh is noticeably lighter, cooler than Light Sand.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Natural Flesh is noticeably lighter, cooler than Light Sand.
The same difference applies the other way round: Light Sand is noticeably darker, 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 Light Sand on the colour wheel See Natural Flesh on the colour wheel
All matches: Light Sand equivalents · Natural Flesh equivalents