ΔE 7.1, close: similar, with a visible difference side by side. Apothecary White is a little darker than Blinding Light.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Apothecary White is a little darker than Blinding Light.
The same difference applies the other way round: Blinding Light 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 Blinding Light on the colour wheel See Apothecary White on the colour wheel
All matches: Blinding Light equivalents · Apothecary White equivalents