Retro palette
Crimson Marsh
From #7d0001 ink through #b8271e, #d8483b, #de6556 to #fe8171 light, Crimson Marsh is a complementary progression that holds together at any size. Use it for wellness apps where the interface must feel calm, not clinical. The darkest and lightest stops clear AA as a text pair.
redretrofive-stophigh-contrast
#7d0001
#b8271e
#d8483b
#de6556
#fe8171
The generator opens with #7d0001 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.