Retro palette
Copper Mesa
From #910024 ink through #c0404b, #e05d65, #e6767a to #ff9799 light, Copper Mesa 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
#910024
#c0404b
#e05d65
#e6767a
#ff9799
The generator opens with #910024 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.