True Copper vs Screaming Bell

How close are they?

ΔE 9.9, close: similar, with a visible difference side by side. Screaming Bell is a little lighter, more saturated than True Copper.

Can I use Screaming Bell instead of True Copper?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Screaming Bell is a little lighter, more saturated than True Copper.

Can I use True Copper instead of Screaming Bell?

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