Sumi palette
Opal Brook
From #b25000 ink through #376fc5, #008185, #d06c2d to #009fa4 light, Opal Brook is a monochromatic progression that holds together at any size. Use it for packaging that photographs well under harsh retail light.
skysumifive-stop
#b25000
#376fc5
#008185
#d06c2d
#009fa4
The generator opens with #b25000 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.