Sumi palette
Seaside Mill
From #9a3146 ink through #b14759, #00807e, #d06273 to #009f9c light, Seaside Mill is a triadic progression that holds together at any size. Use it for event posters that compete with a wall of other posters.
redsumifive-stop
#9a3146
#b14759
#00807e
#d06273
#009f9c
The generator opens with #9a3146 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.