Nebula palette
Sumac Courtyard
Dark anchor, working middle, light release: #124187, #3d6ab0, #5785ce, #6d95d3, #88b1f2 form a monochromatic nebula set with somewhere to stand at every lightness. Made for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
skynebulafive-stophigh-contrast
#124187
#3d6ab0
#5785ce
#6d95d3
#88b1f2
The generator opens with #124187 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.