ΔE 14.8, fair: the same colour family, but not a straight swap. Sick Green is more saturated, cooler than Lime Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Sick Green is more saturated, cooler than Lime Green.
The same difference applies the other way round: Lime Green is more muted, warmer.
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 Lime Green on the colour wheel See Sick Green on the colour wheel
All matches: Lime Green equivalents · Sick Green equivalents