Rotten Green vs Lime Green

How close are they?

ΔE 8.3, close: similar, with a visible difference side by side. Lime Green is more saturated than Rotten Green.

Can I use Lime Green instead of Rotten Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Lime Green is more saturated than Rotten Green.

Can I use Rotten Green instead of Lime Green?

The same difference applies the other way round: Rotten Green is more muted.

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.