[CUViper]

If pure red is at 0° hue, and orange at 30°, then that engineering value at 3° is much closer to red. The other two at 18° and 19° better fit the reddish-orange description, still more orange than red, while safety orange is up at 28°.

[TeMPOraL]

I'm going to guess it's path dependence, as usual: that 3° hue is called "orange" because it came from iterating on other hues that were more orange.

[OscarCunningham]

If you ask people to select a pure red that isn't tinted towards either orange or purple, then on average they say somewhere around -15°. So 'computer' red at 0° is a little bit orange compared to that.