Jewel palette
Marble Cabin
Dark anchor, working middle, light release: #004d61, #007795, #3292b1, #55a0bb, #72bdd8 form a monochromatic jewel set with somewhere to stand at every lightness. Made for packaging that photographs well under harsh retail light. The darkest and lightest stops clear AA for large text.
cyanjewelfive-stop
#004d61
#007795
#3292b1
#55a0bb
#72bdd8
The generator opens with #004d61 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.