Nebula palette
Steely Pavilion
From #004861 ink through #007297, #308db3, #539bbc to #6fb8d9 light, Steely Pavilion 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 as a text pair.
cyannebulafive-stophigh-contrast
#004861
#007297
#308db3
#539bbc
#6fb8d9
The generator opens with #004861 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.