#127EB3

CSS

:root {
  --mediterranean-blue: #127eb3;
  --mediterranean-blue-rgb: 18 126 179;
  --mediterranean-blue-oklch: oklch(0.563 0.12 237.9);
}

.element {
  color: var(--mediterranean-blue);
  background-color: hsl(200 82% 39%);
  border-color: oklch(0.563 0.12 237.9);
}

Tailwind CSS v4

@theme {
  --color-mediterranean-blue: #127eb3;
  --color-mediterranean-blue-50: #d7fbff;
  --color-mediterranean-blue-100: #c4eeff;
  --color-mediterranean-blue-200: #a5dcff;
  --color-mediterranean-blue-300: #7cc0ef;
  --color-mediterranean-blue-400: #51a8dd;
  --color-mediterranean-blue-500: #1690cc;
  --color-mediterranean-blue-600: #187aac;
  --color-mediterranean-blue-700: #14618a;
  --color-mediterranean-blue-800: #074866;
  --color-mediterranean-blue-900: #053248;
  --color-mediterranean-blue-950: #001e2f;
}

SCSS

$mediterranean-blue: #127eb3;
$mediterranean-blue-rgb: 18, 126, 179;
$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);
}