Sumi palette
Mercurial Brook
Mercurial Brook runs #9c3f69 through #c86b92, #e787ae, #ef9cbd to #ffc2d9 in five measured steps, the tetradic structure keeping every neighbor honest. Reach for it for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA for large text.
pinksumifive-stop
#9c3f69
#c86b92
#e787ae
#ef9cbd
#ffc2d9
The generator opens with #9c3f69 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.