Wrack White vs Flow Improver

How close are they?

ΔE 5.3, very close: most people won’t see a difference side by side. Flow Improver is a little darker, more muted than Wrack White.

Can I use Flow Improver instead of Wrack White?

Yes, for most jobs. Very close match (ΔE 5). Flow Improver is a little darker, more muted than Wrack White.

Can I use Wrack White instead of Flow Improver?

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

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.