I've always loved Blue Jays - but the Jays here in Colorado are even more spectacular then those I remember in Pennsylvania - where I lived for my first 50 years.
This pair of jays look much lighter than other jays I've seen - especially the one in the front. Normally, Blue Jays have much more blue on their necks - above the "necklace" and light grey on their chests.
Maybe he's a juvenile who doesn't have his coloring yet - but one of my books pictures two color variations - and I think this is the lighter of the two.
This jay is slightly darker on his back, but still lacks the blue chin - and look how white his belly is.
This isn't a Blue Jay - he's a Western Scrub Jay who seems to have made a friend in my garden.