ΔE 19.6, loose: different enough that you should pick on purpose. Khador Red Highlight is a little lighter, much more muted, warmer than Mythical Orange.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Khador Red Highlight is a little lighter, much more muted, warmer than Mythical Orange.
The same difference applies the other way round: Mythical Orange is a little darker, much 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.
See Mythical Orange on the colour wheel See Khador Red Highlight on the colour wheel
All matches: Mythical Orange equivalents · Khador Red Highlight equivalents