Deep Ocean color palette

Deep Ocean is a 4-colour dark palette combining Onyx, Prussian Blue, Cerulean and Ice Blue. It works especially well for dark-mode interfaces and dramatic, premium visuals, and for travel, beach resorts and coastal home decor. Because the colours share a similar hue, the palette feels cohesive — use contrast in lightness to create hierarchy.

:root {
  --onyx: #0e1c2b;
  --prussian-blue: #1a3a5a;
  --cerulean: #2f7ea8;
  --ice-blue: #cfe9f5;
}