Telogreika Ochre vs Arabic Shadow

How close are they?

ΔE 15.5, loose: different enough that you should pick on purpose. Arabic Shadow is noticeably darker, more saturated, cooler than Telogreika Ochre.

Can I use Arabic Shadow instead of Telogreika Ochre?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Arabic Shadow is noticeably darker, more saturated, cooler than Telogreika Ochre.

Can I use Telogreika Ochre instead of Arabic Shadow?

The same difference applies the other way round: Telogreika Ochre is noticeably lighter, more muted, 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.