Sumi palette
Lunar Plaza
Dark anchor, working middle, light release: #982e00, #b24219, #007890, #d15e38, #0095b3 form a triadic sumi set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size.
redsumifive-stop
#982e00
#b24219
#007890
#d15e38
#0095b3
The generator opens with #982e00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.