Retro palette
Linen Brook
Five retro stops with room to breathe — #093e9e grounds, #376ac8 and #5186e6 do the talking, #6997ea softens, #8ab4ff lifts. The split-complementary bones keep it coherent across event posters that compete with a wall of other posters. The darkest and lightest stops clear AA as a text pair.
skyretrofive-stophigh-contrast
#093e9e
#376ac8
#5186e6
#6997ea
#8ab4ff
The generator opens with #093e9e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.