Sumi palette
Brisk Atelier
From #6c240a ink through #964e37, #b36850, #bc7b67 to #da9781 light, Brisk Atelier is a 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
#6c240a
#964e37
#b36850
#bc7b67
#da9781
The generator opens with #6c240a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.