Shining Silver vs White Alchemy

How close are they?

ΔE 7.8, close: similar, with a visible difference side by side. White Alchemy is a little lighter than Shining Silver.

Can I use White Alchemy instead of Shining Silver?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). White Alchemy is a little lighter than Shining Silver.

Can I use Shining Silver instead of White Alchemy?

The same difference applies the other way round: Shining Silver is a little darker.

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.