Nebula palette
Hickory Grove
From #00494b ink through #007477, #318f92, #539c9e to #6fb9bb light, Hickory Grove is a monochromatic progression that holds together at any size. Use it for podcast cover art at sixty pixels square. The darkest and lightest stops clear AA as a text pair.
cyannebulafive-stophigh-contrast
#00494b
#007477
#318f92
#539c9e
#6fb9bb
The generator opens with #00494b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.