Storybook palette
Firstlight Delta
From #006477 ink through #0091ab, #39adc8, #61bbd2 to #7fd8ef light, Firstlight Delta 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.
cyanstorybookfive-stop
#006477
#0091ab
#39adc8
#61bbd2
#7fd8ef
The generator opens with #006477 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.