Aurora palette
Pewter Abbey
Five stops tuned to sit together without fighting — #00426b ink anchors the set, #75b0e1 opens it up, and #1f6a9f, #3e85bc, #5a94c3 cross the middle in a triadic arrangement. Pewter Abbey suits book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
skyaurorafive-stophigh-contrast
#00426b
#1f6a9f
#3e85bc
#5a94c3
#75b0e1
The generator opens with #00426b as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.