Blue Hour palette
Frosted Cellar
Five blue hour stops with room to breathe — #a43719 grounds, #d16549 and #f08164 do the talking, #f7977e softens, #ffc0af lifts. The tetradic bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
redbluehourfive-stop
#a43719
#d16549
#f08164
#f7977e
#ffc0af
The generator opens with #a43719 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.