Aurora palette
Walnut Moor
From #00535c ink through #007f8c, #349aa8, #59a8b3 to #75c5d0 light, Walnut Moor 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 for large text.
cyanaurorafive-stop
#00535c
#007f8c
#349aa8
#59a8b3
#75c5d0
The generator opens with #00535c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.