Human Flesh vs Templar White

How close are they?

ΔE 24.8, loose: different enough that you should pick on purpose. Templar White is a little lighter, much more muted than Human Flesh.

Can I use Templar White instead of Human Flesh?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Templar White is a little lighter, much more muted than Human Flesh.

Can I use Human Flesh instead of Templar White?

The same difference applies the other way round: Human Flesh is a little darker, much more saturated.

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.