Sumi palette
Lantern Crossing
From #790002 ink through #b61f19, #d64236, #dc6052 to #fc7c6d light, Lantern Crossing is a tetradic progression that holds together at any size. Use it for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#790002
#b61f19
#d64236
#dc6052
#fc7c6d
The generator opens with #790002 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.