color match

I’ve been repairing a lot of Boardworks Kraken sups this summer and have not yet found a good match for the Kraken steel blue.Im using pantone color cards but they all seem to miss. Any suggestions? Also I have a Walden Magic 9’5 sup. When i shake it i here water sloshing around in it. There must be a void in the board but so far Walden has not been forthcoming about the construction,strange very strange.

“Shake and bake”