Retro palette
River Square
Five retro stops with room to breathe — #b12437 grounds, #df5961 and #ff767c do the talking, #ff9495 softens, #ffc2c1 lifts. The split-complementary bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
redretrofive-stop
#b12437
#df5961
#ff767c
#ff9495
#ffc2c1
The generator opens with #b12437 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.