Wild Rider Red vs Khador Red Highlight

How close are they?

ΔE 31.5, loose: different enough that you should pick on purpose. Khador Red Highlight is noticeably lighter, more muted, warmer than Wild Rider Red.

Can I use Khador Red Highlight instead of Wild Rider Red?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 32). Khador Red Highlight is noticeably lighter, more muted, warmer than Wild Rider Red.

Can I use Wild Rider Red instead of Khador Red Highlight?

The same difference applies the other way round: Wild Rider Red is noticeably darker, more saturated, 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.