Pale Green vs Sick Green

How close are they?

ΔE 14.3, fair: the same colour family, but not a straight swap. Sick Green is a little darker, warmer than Pale Green.

Can I use Sick Green instead of Pale Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Sick Green is a little darker, warmer than Pale Green.

Can I use Pale Green instead of Sick Green?

The same difference applies the other way round: Pale Green is a little lighter, 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.