Retro palette
Inlet Delta
Five stops tuned to sit together without fighting — #a80017 ink anchors the set, #ffb0a8 opens it up, and #d74744, #f7655f, #fd8078 cross the middle in a tetradic arrangement. Inlet Delta suits book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
redretrofive-stop
#a80017
#d74744
#f7655f
#fd8078
#ffb0a8
The generator opens with #a80017 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.