Jewel palette
Marble Harbor
Dark anchor, working middle, light release: #00438c, #136acd, #3686ec, #5697ee, #7db5ff form a analogous jewel set with somewhere to stand at every lightness. Made for newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA as a text pair.
skyjewelfive-stophigh-contrast
#00438c
#136acd
#3686ec
#5697ee
#7db5ff
The generator opens with #00438c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.