Sumi palette
Iris Beacon
Dark anchor, working middle, light release: #77002c, #a63751, #c5536a, #cc6b7c, #eb8697 form a complementary sumi set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#77002c
#a63751
#c5536a
#cc6b7c
#eb8697
The generator opens with #77002c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.