ΔE 7.3, close: similar, with a visible difference side by side. Black is a little darker than IJN Q1 Anti-Glare Blue-Black.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Black is a little darker than IJN Q1 Anti-Glare Blue-Black.
The same difference applies the other way round: IJN Q1 Anti-Glare Blue-Black 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 IJN Q1 Anti-Glare Blue-Black on the colour wheel See Black on the colour wheel
All matches: IJN Q1 Anti-Glare Blue-Black equivalents · Black equivalents