Retro palette
Icy Cellar
From #8a0012 ink through #bf3435, #df534f, #e56e67 to #ff8f87 light, Icy Cellar is a monochromatic progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
redretrofive-stophigh-contrast
#8a0012
#bf3435
#df534f
#e56e67
#ff8f87
The generator opens with #8a0012 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.