Blue Hour palette
Steely Crater
From #004855 ink through #007386, #318ea2, #539cac to #6fb8c9 light, Steely Crater is a split-complementary progression that holds together at any size. Use it for wellness apps where the interface must feel calm, not clinical. The darkest and lightest stops clear AA as a text pair.
cyanbluehourfive-stophigh-contrast
#004855
#007386
#318ea2
#539cac
#6fb8c9
The generator opens with #004855 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.