Blue Hour palette
Tranquil Canyon
Dark anchor, working middle, light release: #0060a7, #308adc, #4fa6fb, #6fb7ff, #a8d3ff form a tetradic blue hour set with somewhere to stand at every lightness. Made for event posters that compete with a wall of other posters. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#0060a7
#308adc
#4fa6fb
#6fb7ff
#a8d3ff
The generator opens with #0060a7 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.