Blue Hour palette
Porcelain Square
From #004f94 ink through #3779c1, #5395df, #6da5e4 to #8cc1ff light, Porcelain Square is a analogous progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#004f94
#3779c1
#5395df
#6da5e4
#8cc1ff
The generator opens with #004f94 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.