ΔE 30.9, loose: different enough that you should pick on purpose. Angel Green is much more saturated than Chromium Oxide Green.
Can I use Angel Green instead of Chromium Oxide Green?
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 31). Angel Green is much more saturated than Chromium Oxide Green.
Can I use Chromium Oxide Green instead of Angel Green?
The same difference applies the other way round: Chromium Oxide Green is much 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.