Retro palette
Obsidian Bluff
Five retro stops with room to breathe — #5b63bf grounds, #0073bb and #007c93 do the talking, #318fd9 softens, #0099b5 lifts. The split-complementary bones keep it coherent across museum exhibition graphics with long sightlines.
blueretrofive-stop
#5b63bf
#0073bb
#007c93
#318fd9
#0099b5
The generator opens with #5b63bf as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.