In the absence of a photo, how about a more detailed description? Exact color(s), crested or not (if not, then Gray is possible; Blue jay is out of range and IS crested), size, etc. For that matter, why couldn't it be a variant Steller's? According to Cornell's All About Birds, there are two forms. Go here and see if your bird matches one:
http://www.birds.cornell.edu/AllAboutBirds/BirdGuide/Stellers_Jay.html
"I put it down. you gotta pick it up." —Thelonious Monk