ΔE 7.2, close: similar, with a visible difference side by side. Uniform Grey is a little darker than Medium Grey FS 36270.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Uniform Grey is a little darker than Medium Grey FS 36270.
The same difference applies the other way round: Medium Grey FS 36270 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 Medium Grey FS 36270 on the colour wheel See Uniform Grey on the colour wheel
All matches: Medium Grey FS 36270 equivalents · Uniform Grey equivalents