Aurora palette
Flannel Plaza
Dark anchor, working middle, light release: #1a4791, #4471bb, #5e8cd9, #749dde, #90b9fd form a monochromatic aurora set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
skyaurorafive-stop
#1a4791
#4471bb
#5e8cd9
#749dde
#90b9fd
The generator opens with #1a4791 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.