Opera palette
Gloaming Deck
Gloaming Deck runs #004668 through #006fa1, #308abe, #5299c5 to #6eb5e3 in five measured steps, the split-complementary structure keeping every neighbor honest. Reach for it for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
skyoperafive-stophigh-contrast
#004668
#006fa1
#308abe
#5299c5
#6eb5e3
The generator opens with #004668 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.