Pastel palette
Rocky Porch
From #004689 ink through #0f6dca, #3589e9, #569aec to #7cb7ff light, Rocky Porch is a split-complementary progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
skypastelfive-stophigh-contrast
#004689
#0f6dca
#3589e9
#569aec
#7cb7ff
The generator opens with #004689 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.