Starship Filth vs Venom Wyrm

How close are they?

ΔE 6.7, close: similar, with a visible difference side by side. Venom Wyrm is more saturated than Starship Filth.

Can I use Venom Wyrm instead of Starship Filth?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Venom Wyrm is more saturated than Starship Filth.

Can I use Starship Filth instead of Venom Wyrm?

The same difference applies the other way round: Starship Filth 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.