Storybook palette
Polar Brook
From #004c5d ink through #00778f, #3292ab, #55a0b5 to #72bcd2 light, Polar Brook is a tetradic progression that holds together at any size. Use it for podcast cover art at sixty pixels square. The darkest and lightest stops clear AA for large text.
cyanstorybookfive-stop
#004c5d
#00778f
#3292ab
#55a0b5
#72bcd2
The generator opens with #004c5d as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.