Blue Hour palette
Butter Library
Butter Library runs #00495a through #00738c, #318ea8, #539cb2 to #70b8cf in five measured steps, the analogous structure keeping every neighbor honest. Reach for it for wellness apps where the interface must feel calm, not clinical. The darkest and lightest stops clear AA for large text.
cyanbluehourfive-stop
#00495a
#00738c
#318ea8
#539cb2
#70b8cf
The generator opens with #00495a as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.