Blue Hour palette
Pewter Caravan
From #006397 ink through #2e8dcb, #4ea9e9, #6fb9ef to #9dd4ff light, Pewter Caravan is a triadic 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
#006397
#2e8dcb
#4ea9e9
#6fb9ef
#9dd4ff
The generator opens with #006397 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.