Aurora palette
Polar Mesa
Dark anchor, working middle, light release: #3e43ad, #636fd8, #7c8bf7, #8e9efa, #b1beff form a analogous aurora set with somewhere to stand at every lightness. Made for national-park posters with layered mountain silhouettes. The darkest and lightest stops clear AA for large text.
blueaurorafive-stop
#3e43ad
#636fd8
#7c8bf7
#8e9efa
#b1beff
The generator opens with #3e43ad as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.