White Scar vs Trooper White

How close are they?

ΔE 7.6, close: similar, with a visible difference side by side. Trooper White is a little darker, more saturated than White Scar.

Can I use Trooper White instead of White Scar?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Trooper White is a little darker, more saturated than White Scar.

Can I use White Scar instead of Trooper White?

The same difference applies the other way round: White Scar is a little lighter, more muted.

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.