ΔE 20.3, loose: different enough that you should pick on purpose. Natural Flesh is much more saturated, warmer than Titan Buff.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Natural Flesh is much more saturated, warmer than Titan Buff.
The same difference applies the other way round: Titan Buff is much 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 Titan Buff on the colour wheel See Natural Flesh on the colour wheel
All matches: Titan Buff equivalents · Natural Flesh equivalents