Canoptek Alloy vs Sparkle Motion

How close are they?

ΔE 7.1, close: similar, with a visible difference side by side. Sparkle Motion is more muted than Canoptek Alloy.

Can I use Sparkle Motion instead of Canoptek Alloy?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Sparkle Motion is more muted than Canoptek Alloy.

Can I use Canoptek Alloy instead of Sparkle Motion?

The same difference applies the other way round: Canoptek Alloy 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.