Monochrome palette
Quilted Brook
From #004168 ink through #0069a4, #2e84c1, #5093c8 to #6bafe5 light, Quilted Brook 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.
skymonochromefive-stophigh-contrast
#004168
#0069a4
#2e84c1
#5093c8
#6bafe5
The generator opens with #004168 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.