Hmm. Without seeing photo of your house exterior, there's no way for us to give you good advice. Post a few pix.

I am a landscape designer and I do a lot of hardscape design using concrete pavers. To my knowledge, none come in a "blue" color.......at least no local suppliers offer them. Various shades of gray and a number of warmer tones but no blue. Just not a common paving color.

Options are using natural blue stone (pricey) or a stamped and tinted concrete.

And I fail to see that needing to see photos would make much of a determination in color choice for any paving.

Thanks Gardengal, we were surprised too that that isn't an option for the concrete pavers. We don't want a garish color, just a nice blue-gray. Yes, natural stone would be expensive and beautiful. I'm not fond of the stamped, tinted look. 

I'll post pictures, but it's a white stucco house with lots of windows in the front. Roof is black/gray

There are blue colorants for concrete, if you want concrete. I chose neutrals greys and tans when I had a new driveway poured and stamped. But I still have the sheet that shows all sorts of colorants.

Anything can be done poorly and make people think it can't look good. Maybe you don't have a good concrete artist in your area. Maybe all you've seen is stamped concrete that had a glossy finish. But stamped colored concrete can look better than pavers.

I would think that there are no blue concrete pavers because not many homeowners would want them, so essentially, no demand. I love natural bluestone and have installed it around two pools.

Stamped concrete seems to be your best bet for getting the color you want.

"but it's a white stucco house with lots of windows in the front. Roof is black/gray"

Maybe change the house color instead......