Aurora palette
Obsidian Plaza
From #00575b ink through #008389, #359fa5, #5aacb1 to #77c9cd light, Obsidian Plaza is a analogous progression that holds together at any size. Use it for hotel key cards and lobby signage in one system. The darkest and lightest stops clear AA for large text.
cyanaurorafive-stop
#00575b
#008389
#359fa5
#5aacb1
#77c9cd
The generator opens with #00575b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.