ΔE 8.5, close: similar, with a visible difference side by side. Intermediate Blue is cooler than Cobalt Violet Grey.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Intermediate Blue is cooler than Cobalt Violet Grey.
The same difference applies the other way round: Cobalt Violet Grey is warmer.
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 Cobalt Violet Grey on the colour wheel See Intermediate Blue on the colour wheel
All matches: Cobalt Violet Grey equivalents · Intermediate Blue equivalents