ΔE 7.6, close: similar, with a visible difference side by side. Blue Grey Pale is a little lighter, more muted than Winter Grey.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Blue Grey Pale is a little lighter, more muted than Winter Grey.
The same difference applies the other way round: Winter 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.
See Winter Grey on the colour wheel See Blue Grey Pale on the colour wheel
All matches: Winter Grey equivalents · Blue Grey Pale equivalents