Retro palette
Mercurial Brook
From #8c1829 ink through #b94b51, #d8676b, #df7e7f to #ff9a9a light, Mercurial Brook is a tetradic 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
#8c1829
#b94b51
#d8676b
#df7e7f
#ff9a9a
The generator opens with #8c1829 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.