ΔE 7.3, close: similar, with a visible difference side by side. Pale Grey Blue is a little darker than Sword Grey.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Pale Grey Blue is a little darker than Sword Grey.
The same difference applies the other way round: Sword 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 Sword Grey on the colour wheel See Pale Grey Blue on the colour wheel
All matches: Sword Grey equivalents · Pale Grey Blue equivalents