Blue Hour palette
Speckled Brook
Five blue hour stops with room to breathe — #004971 grounds, #0072ac and #308dc9 do the talking, #549cd0 softens, #70b9ee lifts. The complementary bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
skybluehourfive-stophigh-contrast
#004971
#0072ac
#308dc9
#549cd0
#70b9ee
The generator opens with #004971 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.