Starship Sludge Bay vs Magnolia Brown

How close are they?

ΔE 6.5, close: similar, with a visible difference side by side. Magnolia Brown is more muted than Starship Sludge Bay.

Can I use Magnolia Brown instead of Starship Sludge Bay?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Magnolia Brown is more muted than Starship Sludge Bay.

Can I use Starship Sludge Bay instead of Magnolia Brown?

The same difference applies the other way round: Starship Sludge Bay 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.