Sumi palette
Copper Loft
Dark anchor, working middle, light release: #901b41, #bd4d68, #dc6982, #e48094, #ff9fb1 form a tetradic sumi set with somewhere to stand at every lightness. Made for tea packaging where the flavor color does the talking. The darkest and lightest stops clear AA for large text.
redsumifive-stop
#901b41
#bd4d68
#dc6982
#e48094
#ff9fb1
The generator opens with #901b41 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.