Sumi palette
Lantern Inn
From #870018 ink through #c02c36, #e04c50, #e66968 to #ff8b87 light, Lantern Inn is a split-complementary progression that holds together at any size. Use it for event posters that compete with a wall of other posters. The darkest and lightest stops clear AA as a text pair.
redsumifive-stophigh-contrast
#870018
#c02c36
#e04c50
#e66968
#ff8b87
The generator opens with #870018 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.