Glittering Green vs Appleseed

How close are they?

ΔE 21.8, loose: different enough that you should pick on purpose. Appleseed is noticeably lighter, much more saturated than Glittering Green.

Can I use Appleseed instead of Glittering Green?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Appleseed is noticeably lighter, much more saturated than Glittering Green.

Can I use Glittering Green instead of Appleseed?

The same difference applies the other way round: Glittering Green is noticeably darker, 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.