Nebula palette
Evening Foundry
Dark anchor, working middle, light release: #004a49, #007574, #31908f, #539d9c, #70bab8 form a complementary 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.
cyannebulafive-stophigh-contrast
#004a49
#007574
#31908f
#539d9c
#70bab8
The generator opens with #004a49 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.