ΔE 4.9, very close: most people won’t see a difference side by side. OSL White is a little darker than Blinding Light. They are different kinds of paint: Army Painter Blinding Light is a one-coat contrast-style paint and Green Stuff World OSL White is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Yes, for most jobs. Very close match (ΔE 5). OSL White is a little darker than Blinding Light. They are different kinds of paint.
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 OSL White on the colour wheel
All matches: Blinding Light equivalents · OSL White equivalents