Sumi palette
Oaken Dune
From #820036 ink through #b13a5c, #d05676, #d86f87 to #f78ba2 light, Oaken Dune is a analogous 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
#820036
#b13a5c
#d05676
#d86f87
#f78ba2
The generator opens with #820036 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.