Sumi palette
Atlas Plaza
Dark anchor, working middle, light release: #76013a, #a23b60, #c0567a, #c96d89, #e789a5 form a tetradic sumi set with somewhere to stand at every lightness. Made for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA as a text pair.
pinksumifive-stophigh-contrast
#76013a
#a23b60
#c0567a
#c96d89
#e789a5
The generator opens with #76013a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.