ΔE 9.8, close: similar, with a visible difference side by side. Glacier Blue is a little darker, more saturated than White Scar.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Glacier Blue is a little darker, more saturated than White Scar.
The same difference applies the other way round: White Scar is a little lighter, more muted.
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 White Scar on the colour wheel See Glacier Blue on the colour wheel
All matches: White Scar equivalents · Glacier Blue equivalents