Sumi palette
Seafoam Archive
From #810e37 ink through #ad435d, #cc5e77, #d47588 to #f291a4 light, Seafoam Archive is a split-complementary progression that holds together at any size. Use it for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#810e37
#ad435d
#cc5e77
#d47588
#f291a4
The generator opens with #810e37 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.