Temple Ochre vs Fairy Flesh

How close are they?

ΔE 17.3, loose: different enough that you should pick on purpose. Fairy Flesh is noticeably lighter, more saturated than Temple Ochre.

Can I use Fairy Flesh instead of Temple Ochre?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Fairy Flesh is noticeably lighter, more saturated than Temple Ochre.

Can I use Temple Ochre instead of Fairy Flesh?

The same difference applies the other way round: Temple Ochre is noticeably darker, 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.