2003 Dodge Ram 1500 5.7L Hemi

I can’t get my high beams to stay on. I pull switch back halfway and they turn on but I continue to pull the switch back to have them stay on, they turn down to this blue light. If I flick the switch again to go back to low beams, it goes to low beams and works for low beams. I can hold the switch to keep the high beams on, but I need to know what to do to get the high beams to stay on.