ΔE 9.1, close: similar, with a visible difference side by side. is a little darker than Pearl Grey. They are different kinds of paint: Scale75 Pearl Grey is a pearl paint and Vallejo is a metallic, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). is a little darker than Pearl Grey. They are different kinds of paint.
The same difference applies the other way round: Pearl Grey is a little lighter.
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.
See Pearl Grey on the colour wheel See on the colour wheel
All matches: Pearl Grey equivalents · equivalents