Wazdakka Red vs Scab Red

How close are they?

ΔE 19.1, loose: different enough that you should pick on purpose. Scab Red is more saturated, warmer than Wazdakka Red.

Can I use Scab Red instead of Wazdakka Red?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Scab Red is more saturated, warmer than Wazdakka Red.

Can I use Wazdakka Red instead of Scab Red?

The same difference applies the other way round: Wazdakka Red is more muted, cooler.

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.