Disgusting Slime vs Plague Toad Venom

How close are they?

ΔE 9.2, close: similar, with a visible difference side by side. Plague Toad Venom is more muted than Disgusting Slime.

Can I use Plague Toad Venom instead of Disgusting Slime?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Plague Toad Venom is more muted than Disgusting Slime.

Can I use Disgusting Slime instead of Plague Toad Venom?

The same difference applies the other way round: Disgusting Slime is 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.