Blue Hour palette
Mustard Bookshop
From #00507e ink through #0079bb, #3295d9, #57a4de to #74c1fd light, Mustard Bookshop is a tetradic progression that holds together at any size. Use it for wellness apps where the interface must feel calm, not clinical. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#00507e
#0079bb
#3295d9
#57a4de
#74c1fd
The generator opens with #00507e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.