Blue Hour palette
Amber Pavilion
From #9b1b00 ink through #b72f15, #007586, #d74e35 to #0092a7 light, Amber Pavilion is a complementary progression that holds together at any size. Use it for book covers that read at thumbnail size.
redbluehourfive-stop
#9b1b00
#b72f15
#007586
#d74e35
#0092a7
The generator opens with #9b1b00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.