ΔE 7.9, close: similar, with a visible difference side by side. Steel Blue is a little lighter, warmer than Breonne Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Steel Blue is a little lighter, warmer than Breonne Blue.
The same difference applies the other way round: Breonne Blue 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 Breonne Blue on the colour wheel See Steel Blue on the colour wheel
All matches: Breonne Blue equivalents · Steel Blue equivalents