Mummy Robes vs White Sands

How close are they?

ΔE 8.9, close: similar, with a visible difference side by side. White Sands is a little lighter, cooler than Mummy Robes.

Can I use White Sands instead of Mummy Robes?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). White Sands is a little lighter, cooler than Mummy Robes.

Can I use Mummy Robes instead of White Sands?

The same difference applies the other way round: Mummy Robes is a little darker, warmer.

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.