Prairie palette
Halcyon Reef
From #005c69 ink through #00889b, #36a4b7, #5db1c2 to #7acedf light, Halcyon Reef is a tetradic 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.
cyanprairiefive-stop
#005c69
#00889b
#36a4b7
#5db1c2
#7acedf
The generator opens with #005c69 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.