#1A7DB2

CSS

:root {
  --mediterranean-blue: #1a7db2;
  --mediterranean-blue-rgb: 26 125 178;
  --mediterranean-blue-oklch: oklch(0.562 0.118 238.9);
}

.element {
  color: var(--mediterranean-blue);
  background-color: hsl(201 75% 40%);
  border-color: oklch(0.562 0.118 238.9);
}

Tailwind CSS v4

@theme {
  --color-mediterranean-blue: #1a7db2;
  --color-mediterranean-blue-50: #d8faff;
  --color-mediterranean-blue-100: #c6eeff;
  --color-mediterranean-blue-200: #a7dbff;
  --color-mediterranean-blue-300: #7fbfee;
  --color-mediterranean-blue-400: #54a8dc;
  --color-mediterranean-blue-500: #208fcb;
  --color-mediterranean-blue-600: #1f79ab;
  --color-mediterranean-blue-700: #19618a;
  --color-mediterranean-blue-800: #0c4866;
  --color-mediterranean-blue-900: #083247;
  --color-mediterranean-blue-950: #001d2f;
}

SCSS

$mediterranean-blue: #1a7db2;
$mediterranean-blue-rgb: 26, 125, 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);
}