#0881A4

CSS

:root {
  --ahoy-blue: #0881a4;
  --ahoy-blue-rgb: 8 129 164;
  --ahoy-blue-oklch: oklch(0.562 0.106 225.8);
}

.element {
  color: var(--ahoy-blue);
  background-color: hsl(193 91% 34%);
  border-color: oklch(0.562 0.106 225.8);
}

Tailwind CSS v4

@theme {
  --color-ahoy-blue: #0881a4;
  --color-ahoy-blue-50: #d7fcff;
  --color-ahoy-blue-100: #c4f0ff;
  --color-ahoy-blue-200: #a5def8;
  --color-ahoy-blue-300: #7bc3e2;
  --color-ahoy-blue-400: #4fabce;
  --color-ahoy-blue-500: #0c94bb;
  --color-ahoy-blue-600: #137d9e;
  --color-ahoy-blue-700: #11647f;
  --color-ahoy-blue-800: #064a5d;
  --color-ahoy-blue-900: #053341;
  --color-ahoy-blue-950: #001f2a;
}

SCSS

$ahoy-blue: #0881a4;
$ahoy-blue-rgb: 8, 129, 164;
$ahoy-blue-light: mix(#fff, $ahoy-blue, 20%);
$ahoy-blue-dark: mix(#000, $ahoy-blue, 20%);

.element {
  color: $ahoy-blue;
  box-shadow: 0 0 0 2px rgba($ahoy-blue, 0.35);
}