Sumi palette
Brazen Ridge
From #6c2b00 ink through #a24b18, #c06637, #c87a54 to #e6966f light, Brazen Ridge 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.
orangesumifive-stophigh-contrast
#6c2b00
#a24b18
#c06637
#c87a54
#e6966f
The generator opens with #6c2b00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.