ΔE 20.7, loose: different enough that you should pick on purpose. Fallen Grass is much more muted, warmer than Wizards Orb.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Fallen Grass is much more muted, warmer than Wizards Orb.
The same difference applies the other way round: Wizards Orb is much more saturated, cooler.
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.
See Wizards Orb on the colour wheel See Fallen Grass on the colour wheel
All matches: Wizards Orb equivalents · Fallen Grass equivalents