Greenskin Punch vs Goblin Green

How close are they?

ΔE 15.7, loose: different enough that you should pick on purpose. Goblin Green is a little darker, more saturated, warmer than Greenskin Punch.

Can I use Goblin Green instead of Greenskin Punch?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Goblin Green is a little darker, more saturated, warmer than Greenskin Punch.

Can I use Greenskin Punch instead of Goblin Green?

The same difference applies the other way round: Greenskin Punch is a little lighter, more muted, 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.