Blue Hour palette
Rainy Archive
From #005db5 ink through #3b88e4, #5ca5ff, #7bb5ff to #afd2ff light, Rainy Archive is a tetradic 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
#005db5
#3b88e4
#5ca5ff
#7bb5ff
#afd2ff
The generator opens with #005db5 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.