Blue Hour palette
Luminous Square
A quiet five-stop blue hour arc with a confident middle — #c7573b carries the weight and #35a0ee carries the air, with #957c00, #0084d0 and #e67356 bridging in tetradic formation. Built for book covers that read at thumbnail size.
redbluehourfive-stop
#c7573b
#957c00
#0084d0
#e67356
#35a0ee
The generator opens with #c7573b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.