Monochrome palette
Luminous Crossing
From #005486 ink through #007dc4, #3399e2, #59a9e7 to #7ec5ff light, Luminous Crossing is a tetradic 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.
skymonochromefive-stop
#005486
#007dc4
#3399e2
#59a9e7
#7ec5ff
The generator opens with #005486 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.