Gladeshard vs Plague Toad Venom

How close are they?

ΔE 8.6, close: similar, with a visible difference side by side. Plague Toad Venom is a little lighter, more muted than Gladeshard.

Can I use Plague Toad Venom instead of Gladeshard?

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

Can I use Gladeshard instead of Plague Toad Venom?

The same difference applies the other way round: Gladeshard is a little darker, 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.