ΔE 6.9, close: similar, with a visible difference side by side. Orange Yellow is a little lighter than Mythical Orange.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Orange Yellow is a little lighter than Mythical Orange.
The same difference applies the other way round: Mythical Orange is a little darker.
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 Orange Yellow on the colour wheel
All matches: Mythical Orange equivalents · Orange Yellow equivalents