Retro palette
Lingering Bookshop
Dark anchor, working middle, light release: #9b0d09, #b32d23, #007380, #d24c3e, #0090a0 form a tetradic retro set with somewhere to stand at every lightness. Made for craft brewery cans lined up in a cooler door.
redretrofive-stop
#9b0d09
#b32d23
#007380
#d24c3e
#0090a0
The generator opens with #9b0d09 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.