Jade Green vs Leaf Green

How close are they?

ΔE 15.3, loose: different enough that you should pick on purpose. Leaf Green is noticeably darker, more muted than Jade Green.

Can I use Leaf Green instead of Jade Green?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Leaf Green is noticeably darker, more muted than Jade Green.

Can I use Jade Green instead of Leaf Green?

The same difference applies the other way round: Jade Green is noticeably lighter, more saturated.

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.