Ordic Olive vs Angel Green

How close are they?

ΔE 29.8, loose: different enough that you should pick on purpose. Angel Green is much more saturated, cooler than Ordic Olive.

Can I use Angel Green instead of Ordic Olive?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 30). Angel Green is much more saturated, cooler than Ordic Olive.

Can I use Ordic Olive instead of Angel Green?

The same difference applies the other way round: Ordic Olive is much 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.