Deer can see blues/violets and like colors in that spectrum.
When I used to work on a white tail hunting operation we had a blue,gray, and red work trucks.
We drove by a food plot every morning where deer were about 75 yards away, and if you were in the blue or gray truck they would run off but in the red they didn't seem to care and would keep on feeding. After driving all 3 trucks around for a few years it was obvious they didn't care for the blue or grey trucks and you could get very close to them in the red one.