Light Green vs Sick Green

How close are they?

ΔE 13.2, fair: the same colour family, but not a straight swap. Sick Green is noticeably darker, more muted than Light Green.

Can I use Sick Green instead of Light Green?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Sick Green is noticeably darker, more muted than Light Green.

Can I use Light Green instead of Sick Green?

The same difference applies the other way round: Light 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.