Petrichor palette
Parchment Caravan
From #004b4d ink through #00767a, #319195, #549ea1 to #70bbbe light, Parchment Caravan 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 as a text pair.
cyanpetrichorfive-stophigh-contrast
#004b4d
#00767a
#319195
#549ea1
#70bbbe
The generator opens with #004b4d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.