Sumi palette
Topaz Heath
From #7a2300 ink through #a74d30, #c5684a, #cd7d63 to #ec997e light, Topaz Heath 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
#7a2300
#a74d30
#c5684a
#cd7d63
#ec997e
The generator opens with #7a2300 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.