Sumi palette
Fern Prairie
Dark anchor, working middle, light release: #8e2f00, #c7501d, #e66c3d, #ed845e, #ffa989 form a split-complementary 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 for large text.
orangesumifive-stop
#8e2f00
#c7501d
#e66c3d
#ed845e
#ffa989
The generator opens with #8e2f00 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.