Blue Hour palette
Terracotta Cove
From #004e8b ink through #3977b5, #5493d3, #6ea2d9 to #89bff7 light, Terracotta Cove is a analogous progression that holds together at any size. Use it for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#004e8b
#3977b5
#5493d3
#6ea2d9
#89bff7
The generator opens with #004e8b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.