Sumi palette
Rustic Mill
From #7a1533 ink through #a64559, #c46073, #cd7684 to #eb919f light, Rustic Mill is a split-complementary progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#7a1533
#a64559
#c46073
#cd7684
#eb919f
The generator opens with #7a1533 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.