Disco palette
Mineral Mill
From #005575 ink through #007fae, #349bcb, #5aa9d3 to #76c6f1 light, Mineral Mill is a tetradic progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skydiscofive-stop
#005575
#007fae
#349bcb
#5aa9d3
#76c6f1
The generator opens with #005575 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.