Plague Toad Venom vs Sick Green

How close are they?

ΔE 7.7, close: similar, with a visible difference side by side. Sick Green is more saturated than Plague Toad Venom.

Can I use Sick Green instead of Plague Toad Venom?

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

Can I use Plague Toad Venom instead of Sick Green?

The same difference applies the other way round: Plague Toad Venom 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.