Jewel palette
Rosewood Harbor
Five jewel stops with room to breathe — #2c3b9d grounds, #5067c7 and #6983e5 do the talking, #7c94e9 softens, #9ab2ff lifts. The tetradic 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.
skyjewelfive-stophigh-contrast
#2c3b9d
#5067c7
#6983e5
#7c94e9
#9ab2ff
The generator opens with #2c3b9d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.