FYI this is an Epic Encounter now. He has 2 blue con adds and he has the HP and dmg of a purple. I tried solo'ing on Ranger and got manhandled. Bring a healer friend.
I've run into him once he was orange to me at 46. I am guessing he is about 47 or 48 at most. He is a pretty rare spawn but he drops killer plate gauntlets with a fire based proc. 98 af or so -Demi
You read mythics posts and see why your bashing is false. Anything higher then you even 1 or 2 levels will con orange. But anything below you has to be (yourlevel/10) levels below you in order to turn from yellow to blue. Considering I'm 50 and he always spawns yellow to me the previous poster was dead on at his guess in level.
Think before you bash people on stuff you know know.
For a character in his 40's there is a 5 lvl con range (for ANY color). So lvl 41-45 would be yellow con to a lvl 45 and a lvl 46-50 would be orange to 45. When you hit 50 you have a 6 lvl con range (if you notice, those annoying lvl 45's still con yellow =/ ).
The actual formula is a little different than what you said (why I'm commenting :). It would actually be ((yourlevel/10) rounded down + 1). SO, a lvl 40 would be 4.0 (obviously already rounded down) plus 1 equals 5. Which is correct, a 5 lvl con for all colors :)