Petrichor palette
Tawny Bookshop
From #00636b ink through #00909b, #38acb7, #60bac3 to #7ed7e0 light, Tawny Bookshop is a monochromatic 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.
cyanpetrichorfive-stop
#00636b
#00909b
#38acb7
#60bac3
#7ed7e0
The generator opens with #00636b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.