Monochrome palette
Vale Square
Vale Square runs #005275 through #007caf, #3398cc, #58a6d3 to #75c3f1 in five measured steps, the tetradic structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skymonochromefive-stop
#005275
#007caf
#3398cc
#58a6d3
#75c3f1
The generator opens with #005275 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.