The Spoonflower Handbook is here!
But the cyan shade of blue on my monitor is not really the shade of blue I am seeing in print. It just doesn't have that aqua edge. Your monitor may vary. If exact shade of blue is important to you, see a test swatch before making any larger order.
If the exact shade doesn't matter, you can take my word for it, this is all shades of blue. (file k31L2)