#2282B2

CSS

:root {
  --mediterranean-blue: #2282b2;
  --mediterranean-blue-rgb: 34 130 178;
  --mediterranean-blue-oklch: oklch(0.575 0.112 236.1);
}

.element {
  color: var(--mediterranean-blue);
  background-color: hsl(200 68% 42%);
  border-color: oklch(0.575 0.112 236.1);
}

Tailwind CSS v4

@theme {
  --color-mediterranean-blue: #2282b2;
  --color-mediterranean-blue-50: #d8fbff;
  --color-mediterranean-blue-100: #c6eeff;
  --color-mediterranean-blue-200: #a8dcff;
  --color-mediterranean-blue-300: #7fc0ea;
  --color-mediterranean-blue-400: #55a8d8;
  --color-mediterranean-blue-500: #2290c6;
  --color-mediterranean-blue-600: #217aa7;
  --color-mediterranean-blue-700: #1a6286;
  --color-mediterranean-blue-800: #0d4863;
  --color-mediterranean-blue-900: #093246;
  --color-mediterranean-blue-950: #001e2d;
}

SCSS

$mediterranean-blue: #2282b2;
$mediterranean-blue-rgb: 34, 130, 178;
$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);
}