That is an unusual shade of blue. Do you have a Joann's, Hancock Fabrics or Hobby Lobby nearby? I know I've bought Kona at all 3 but I've not seen that shade nor is it on their web-sites.
Here's the link to Kaufman's website:
http://www.robertkaufman.com/fabrics/kona_cotton/
Fabric Depot has a large selection and it's 30% off $6.49 now:
https://www.fabricdepot.com/index.ph...age&pageid=181
Hancock's of Paducah sells the color chart but it's $30. Here's all their blues:
http://www.hancocks-paducah.com/Item...Fabric--m-2277
Maybe you can call & one of them will know the appropriate shade to order.