#2F7DAE

CSS

:root {
  --mediterranean-blue: #2f7dae;
  --mediterranean-blue-rgb: 47 125 174;
  --mediterranean-blue-oklch: oklch(0.564 0.107 240.3);
}

.element {
  color: var(--mediterranean-blue);
  background-color: hsl(203 57% 43%);
  border-color: oklch(0.564 0.107 240.3);
}

Tailwind CSS v4

@theme {
  --color-mediterranean-blue: #2f7dae;
  --color-mediterranean-blue-50: #dcfaff;
  --color-mediterranean-blue-100: #caedff;
  --color-mediterranean-blue-200: #addbff;
  --color-mediterranean-blue-300: #86beea;
  --color-mediterranean-blue-400: #60a7d7;
  --color-mediterranean-blue-500: #368ec5;
  --color-mediterranean-blue-600: #3078a7;
  --color-mediterranean-blue-700: #266086;
  --color-mediterranean-blue-800: #174763;
  --color-mediterranean-blue-900: #0f3145;
  --color-mediterranean-blue-950: #021d2d;
}

SCSS

$mediterranean-blue: #2f7dae;
$mediterranean-blue-rgb: 47, 125, 174;
$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);
}