Retro palette
Umber Hollow
From #9e2a1a ink through #cb5a48, #ea7663, #f18d7b to #ffb3a5 light, Umber Hollow is a tetradic progression that holds together at any size. Use it for dashboards where status colors must survive color-vision differences. The darkest and lightest stops clear AA for large text.
redretrofive-stop
#9e2a1a
#cb5a48
#ea7663
#f18d7b
#ffb3a5
The generator opens with #9e2a1a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.