Neon palette
Herbal Square
Five neon stops with room to breathe — #004073 grounds, #30689f and #4b83bc do the talking, #6392c3 softens, #7eaee1 lifts. The monochromatic bones keep it coherent across book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
skyneonfive-stophigh-contrast
#004073
#30689f
#4b83bc
#6392c3
#7eaee1
The generator opens with #004073 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.