Blue Hour palette
Sienna Library
Five stops tuned to sit together without fighting — #9f1f13 ink anchors the set, #ffafa1 opens it up, and #cc5343, #eb6f5e, #f28777 cross the middle in a split-complementary arrangement. Sienna Library suits newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA for large text.
redbluehourfive-stop
#9f1f13
#cc5343
#eb6f5e
#f28777
#ffafa1
The generator opens with #9f1f13 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.