Yellow and blue give you 2 or more plants of different color, bi or multi-color may not add to appearance.

Not sure what Butch just said...but my feeling is you need something that will remain during the winter....either a dwarf evergreen or perhaps a little "something that looks interesting with no leaves" LOL!
But for Hosta...Paul's Glory or June....and, for contrast Krossa regal ( very upright and dusty blue) and then perhaos a yellow the yellow of the Paul's Glory....thinking of maybe Squash Casserole? Mine has gotten enornous in 3 years...HUGE!!! and it has lovely very dark reddish bloom stalks.
Linda C

I actually don't want something evergreen in this exact spot, because when DH shovels snow from the walkway in the winter, this is where it lands. As I have found out with the dwarf blue juniper, the weight of the shoveled snow breaks some of the branches. The blue juniper was supposed to provide winter interest but is obscured when we get a lot of snow.

I have not seen Squash Casserole locally, but it is on my (lengthy) wish list. Along with Clovelly, which would also be nice in the center, if I ever find it. Is Squash Casserole very different from Jimmy Crack Corn? I got that one last year. It came back up for me this spring, but only one eye. I'd hoped for a faster grower.

I have an Abiqua Drinking Gourd, an Abba Dabba Do, and a Pineapple Upside Down Cake planted from left to right. They look fantastic, blue to blue-with-gold edge, to gold.

I recommend it, and Abba Dabba Do has a great piecrust edge too. They are all fast growers.

Lainey

I like Lakeside Prophecy, it is a huge pie crusted edge for an all green plant

You might consider Choo Choo Train and it's two sports, American Icon and Journey's End. They would have a very similar growth habit, and basically be varietions on a theme of large, very heavily pie crusted, and absolutely gorgeous.

Thanks for all the great ideas, I went to my favorite hosta enabler (Wayside in Palmyra NY) and got two Jimmy Crack Corn for the 2 ends. Not sure what to put in the middle. The only big blue hostas they had were elegans varieties. I was tempted by "Spring Fling" but I still think something blue might tie in with the dwarf Junipers. I have Krossal Regal and Queen of the Seas and love them both. Maybe one of those? I also have Love Pat and Abiqua Drinking Gourd but this part of the landscape is under a cherry tree, which sheds lossoms and cherries and all kinds of debris. ADG and Love Pat would collect lots of stuff. I have Journeys end but so far I think this will not give me the size and contrast that I need for the middle spot. I did consider it for the ends tho', it is pretty in pictues that I have seen. Hope mine do well.

How about Arc de Triomphe? It is one of my absolute favorites, but never seems to get mentioned. The descriptions give the center coloring as green, but it is definitely a blue/grey/green. It holds the bluish tint all season. The yellow edge fades to cream as the season progresses. It gets large f-a-s-t. I have it next to Rascal. It does collect junk, however. I am under oaks, and they drop stuff all season. I don't have many that don't collect junk, however. What a pain!
And, I bought it at your favorite hosta hangout, Wayside Gardens. But in 2006. Haven't seen it there this year. They will order things that you request. So if you really want a big blue, just figure out which one.

WOW! If Wayside was still stocking that one it would've defineately "followed me home", LOL! I'd fine a place for that one! Still thinking about a blue hosta for the middle. Tomorrow night is gardening class at another enabler-Green Acres Nursery. The class is free, but somehow my wallet is always lighter after one of their free classes! Hostas are also 10% off right now. If I don't find a big blue beauty there, I might run to Sara's in Brockport. Maybe I can find Mississippi Delta or Ulysses Grant? I've seen them both there.