Sumi palette
Polar Canyon
Dark anchor, working middle, light release: #8f2b00, #a93e18, #007289, #c85a36, #008eab form a split-complementary sumi set with somewhere to stand at every lightness. Made for farmers-market stalls seen from across the parking lot.
redsumifive-stop
#8f2b00
#a93e18
#007289
#c85a36
#008eab
The generator opens with #8f2b00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.