Blue Hour palette
Sumac Bookshop
A quiet five-stop blue hour arc with a confident middle — #00576f carries the weight and #78c9e7 carries the air, with #0082a4, #359ec1 and #5bacca bridging in complementary formation. Built for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
cyanbluehourfive-stop
#00576f
#0082a4
#359ec1
#5bacca
#78c9e7
The generator opens with #00576f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.