Monochrome palette
Copper Hollow
From #005c86 ink through #1a86be, #40a2dc, #63b1e2 to #82ceff light, Copper Hollow 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 for large text.
skymonochromefive-stop
#005c86
#1a86be
#40a2dc
#63b1e2
#82ceff
The generator opens with #005c86 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.