#187EB2

CSS

:root {
  --mediterranean-blue: #187eb2;
  --mediterranean-blue-rgb: 24 126 178;
  --mediterranean-blue-oklch: oklch(0.564 0.118 237.9);
}

.element {
  color: var(--mediterranean-blue);
  background-color: hsl(200 76% 40%);
  border-color: oklch(0.564 0.118 237.9);
}

Tailwind CSS v4

@theme {
  --color-mediterranean-blue: #187eb2;
  --color-mediterranean-blue-50: #d8fbff;
  --color-mediterranean-blue-100: #c5eeff;
  --color-mediterranean-blue-200: #a6dcff;
  --color-mediterranean-blue-300: #7ec0ee;
  --color-mediterranean-blue-400: #53a8dc;
  --color-mediterranean-blue-500: #1d90ca;
  --color-mediterranean-blue-600: #1d7aab;
  --color-mediterranean-blue-700: #176189;
  --color-mediterranean-blue-800: #0a4865;
  --color-mediterranean-blue-900: #073247;
  --color-mediterranean-blue-950: #001e2e;
}

SCSS

$mediterranean-blue: #187eb2;
$mediterranean-blue-rgb: 24, 126, 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);
}