Daylight palette
Tumbleweed Crater
From #00494e ink through #00747b, #318f96, #539ca2 to #6fb9be light, Tumbleweed Crater is a tetradic progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
cyandaylightfive-stophigh-contrast
#00494e
#00747b
#318f96
#539ca2
#6fb9be
The generator opens with #00494e as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.