Blue Hour palette
Plum Square
Dark anchor, working middle, light release: #0061a5, #9e6300, #0075c6, #c27a00, #3191e4 form a tetradic blue hour set with somewhere to stand at every lightness. Made for farmers-market stalls seen from across the parking lot.
skybluehourfive-stop
#0061a5
#9e6300
#0075c6
#c27a00
#3191e4
The generator opens with #0061a5 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.