Blue Hour palette
Flannel Clearing
Dark anchor, working middle, light release: #004373, #326b9e, #4d86bb, #6595c2, #80b1e0 form a tetradic blue hour set with somewhere to stand at every lightness. Made for dashboards where status colors must survive color-vision differences. The darkest and lightest stops clear AA as a text pair.
skybluehourfive-stophigh-contrast
#004373
#326b9e
#4d86bb
#6595c2
#80b1e0
The generator opens with #004373 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.