ΔE 8.7, close: similar, with a visible difference side by side. Signal Blue is a little lighter, warmer than Anthracite Grey.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Signal Blue is a little lighter, warmer than Anthracite Grey.
The same difference applies the other way round: Anthracite Grey is a little darker, cooler.
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 Anthracite Grey on the colour wheel See Signal Blue on the colour wheel
All matches: Anthracite Grey equivalents · Signal Blue equivalents