#2B7DAF

CSS

:root {
  --mediterranean-blue: #2b7daf;
  --mediterranean-blue-rgb: 43 125 175;
  --mediterranean-blue-oklch: oklch(0.564 0.109 240);
}

.element {
  color: var(--mediterranean-blue);
  background-color: hsl(203 61% 43%);
  border-color: oklch(0.564 0.109 240);
}

Tailwind CSS v4

@theme {
  --color-mediterranean-blue: #2b7daf;
  --color-mediterranean-blue-50: #dbfaff;
  --color-mediterranean-blue-100: #c9edff;
  --color-mediterranean-blue-200: #abdbff;
  --color-mediterranean-blue-300: #84bfeb;
  --color-mediterranean-blue-400: #5da7d8;
  --color-mediterranean-blue-500: #328fc7;
  --color-mediterranean-blue-600: #2d79a8;
  --color-mediterranean-blue-700: #236187;
  --color-mediterranean-blue-800: #154764;
  --color-mediterranean-blue-900: #0e3146;
  --color-mediterranean-blue-950: #011d2d;
}

SCSS

$mediterranean-blue: #2b7daf;
$mediterranean-blue-rgb: 43, 125, 175;
$mediterranean-blue-light: mix(#fff, $mediterranean-blue, 20%);
$mediterranean-blue-dark: mix(#000, $mediterranean-blue, 20%);

.element {
  color: $mediterranean-blue;
  box-shadow: 0 0 0 2px rgba($mediterranean-blue, 0.35);
}