Sumi palette
Speckled Reef
Dark anchor, working middle, light release: #812400, #c13b00, #e1592d, #e77350, #ff9574 form a tetradic sumi set with somewhere to stand at every lightness. Made for museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA for large text.
redsumifive-stop
#812400
#c13b00
#e1592d
#e77350
#ff9574
The generator opens with #812400 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.