#007EB4

CSS

:root {
  --mediterranean-blue: #007eb4;
  --mediterranean-blue-rgb: 0 126 180;
  --mediterranean-blue-oklch: oklch(0.562 0.123 237.3);
}

.element {
  color: var(--mediterranean-blue);
  background-color: hsl(198 100% 35%);
  border-color: oklch(0.562 0.123 237.3);
}

Tailwind CSS v4

@theme {
  --color-mediterranean-blue: #007eb4;
  --color-mediterranean-blue-50: #d6fbff;
  --color-mediterranean-blue-100: #c3eeff;
  --color-mediterranean-blue-200: #a3dcff;
  --color-mediterranean-blue-300: #7ac0f0;
  --color-mediterranean-blue-400: #4ca9de;
  --color-mediterranean-blue-500: #0290cd;
  --color-mediterranean-blue-600: #0d7aad;
  --color-mediterranean-blue-700: #0d628b;
  --color-mediterranean-blue-800: #024867;
  --color-mediterranean-blue-900: #033248;
  --color-mediterranean-blue-950: #001e2f;
}

SCSS

$mediterranean-blue: #007eb4;
$mediterranean-blue-rgb: 0, 126, 180;
$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);
}