It could be Multi Blue...

Here is a link that might be useful: Multi Blue

Here is another picture of it. I'll have to look in the morning if it is marked with one of my markers that has the name on it.

Crystal Fountain, I have one also, She's a beauty.

WOW I do have a pkg info on Crystal Fountain but it is marked Maria Gardens and I thought I bought this one at Alta Greenhouse in Mansfield area Ohio. Boy I am really confused. It does look like the picture on the pkg. I don't know what to say just that I wish I would have kept better records. I have a couple other clematis that are not marked and regret not writing the names down better somehow. Thank you! When they start blooming they all become my favorites, go figure!

Westerplatte....one of 4 new clematis planted this spring. I now have about 6 vines but only 12 buds. It is in partial shade (late afternoon sun until evening).

I finally found the tag and I just had to enclose another picture of this pretty clematis which is called Vanso Blue Light. Enjoy