Daylight palette
Sienna Library
From #006880 ink through #0095b6, #3ab1d3, #63bfdc to #81ddfa light, Sienna Library 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.
cyandaylightfive-stop
#006880
#0095b6
#3ab1d3
#63bfdc
#81ddfa
The generator opens with #006880 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.