Blue Hour palette
Granite Harbor
Five blue hour stops with room to breathe — #00599c grounds, #1b82d9 and #3f9ef8 do the talking, #62affb softens, #9acbff lifts. The complementary bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#00599c
#1b82d9
#3f9ef8
#62affb
#9acbff
The generator opens with #00599c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.