Sumi palette
Starlit Brook
From #8e2600 ink through #c24d2a, #e16947, #e88163 to #ffa288 light, Starlit Brook is a monochromatic progression that holds together at any size. Use it for tea packaging where the flavor color does the talking. The darkest and lightest stops clear AA for large text.
redsumifive-stop
#8e2600
#c24d2a
#e16947
#e88163
#ffa288
The generator opens with #8e2600 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.