Sumi palette
Satin Lighthouse
From #a5232f ink through #d25659, #f27273, #f88b89 to #ffb6b3 light, Satin Lighthouse is a monochromatic 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 for large text.
redsumifive-stop
#a5232f
#d25659
#f27273
#f88b89
#ffb6b3
The generator opens with #a5232f as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.