Sumi palette
Primrose Oasis
From #89003c ink through #bb3861, #da557b, #e1708c to #ff8ea8 light, Primrose Oasis 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.
pinksumifive-stophigh-contrast
#89003c
#bb3861
#da557b
#e1708c
#ff8ea8
The generator opens with #89003c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.