White Grey vs Matt White

How close are they?

ΔE 6.9, close: similar, with a visible difference side by side. Matt White is a little lighter, more muted than White Grey.

Can I use Matt White instead of White Grey?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Matt White is a little lighter, more muted than White Grey.

Can I use White Grey instead of Matt White?

The same difference applies the other way round: White Grey is a little darker, 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.