Sumi palette
Rainy Inn
Five stops tuned to sit together without fighting — #a9356a ink anchors the set, #00af94 opens it up, and #c14b7e, #009079, #e06799 cross the middle in a tetradic arrangement. Rainy Inn suits book covers that read at thumbnail size.
pinksumifive-stop
#a9356a
#c14b7e
#009079
#e06799
#00af94
The generator opens with #a9356a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.