Washable White Paint vs Wrack White

How close are they?

ΔE 9.2, close: similar, with a visible difference side by side. Wrack White is a little darker, more saturated than Washable White Paint.

Can I use Wrack White instead of Washable White Paint?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Wrack White is a little darker, more saturated than Washable White Paint.

Can I use Washable White Paint instead of Wrack White?

The same difference applies the other way round: Washable White Paint 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.