ΔE 9.5, close: similar, with a visible difference side by side. Solar Flare is a little darker, more saturated than Safety Orange.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Solar Flare is a little darker, more saturated than Safety Orange.
The same difference applies the other way round: Safety Orange 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.
See Safety Orange on the colour wheel See Solar Flare on the colour wheel
All matches: Safety Orange equivalents · Solar Flare equivalents