ΔE 6.7, close: similar, with a visible difference side by side. BS Med. Sea Grey is more muted than Blue Gray FS35189.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). BS Med. Sea Grey is more muted than Blue Gray FS35189.
The same difference applies the other way round: Blue Gray FS35189 is 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 Blue Gray FS35189 on the colour wheel See BS Med. Sea Grey on the colour wheel
All matches: Blue Gray FS35189 equivalents · BS Med. Sea Grey equivalents