Sumi palette
Oat Harbor
From #7f0f37 ink through #ab435d, #ca5e77, #d27588 to #f091a3 light, Oat Harbor is a monochromatic 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
#7f0f37
#ab435d
#ca5e77
#d27588
#f091a3
The generator opens with #7f0f37 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.