Sumi palette
Umber Cabin
From #7c1600 ink through #b83316, #d85136, #de6c53 to #fe886e light, Umber Cabin is a split-complementary progression that holds together at any size. Use it for museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#7c1600
#b83316
#d85136
#de6c53
#fe886e
The generator opens with #7c1600 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.