Sumi palette
Powdery Orchard
Five stops tuned to sit together without fighting — #a31f02 ink anchors the set, #ffb3a2 opens it up, and #d0543c, #f07157, #f68972 cross the middle in a split-complementary arrangement. Powdery Orchard suits hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA for large text.
redsumifive-stop
#a31f02
#d0543c
#f07157
#f68972
#ffb3a2
The generator opens with #a31f02 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.