Sumi palette
Umber Cottage
From #b51f06 ink through #ce3b25, #008698, #ee5a42 to #00a4ba light, Umber Cottage is a triadic progression that holds together at any size. Use it for bike-shop liveries that survive mud and sun.
redsumifive-stop
#b51f06
#ce3b25
#008698
#ee5a42
#00a4ba
The generator opens with #b51f06 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.