#0381A2

CSS

:root {
  --ahoy-blue: #0381a2;
  --ahoy-blue-rgb: 3 129 162;
  --ahoy-blue-oklch: oklch(0.561 0.105 224.1);
}

.element {
  color: var(--ahoy-blue);
  background-color: hsl(192 96% 32%);
  border-color: oklch(0.561 0.105 224.1);
}

Tailwind CSS v4

@theme {
  --color-ahoy-blue: #0381a2;
  --color-ahoy-blue-50: #d7fcff;
  --color-ahoy-blue-100: #c4f0ff;
  --color-ahoy-blue-200: #a4def7;
  --color-ahoy-blue-300: #7ac3e1;
  --color-ahoy-blue-400: #4faccc;
  --color-ahoy-blue-500: #0894b9;
  --color-ahoy-blue-600: #117d9c;
  --color-ahoy-blue-700: #0f647e;
  --color-ahoy-blue-800: #054a5c;
  --color-ahoy-blue-900: #043341;
  --color-ahoy-blue-950: #001f29;
}

SCSS

$ahoy-blue: #0381a2;
$ahoy-blue-rgb: 3, 129, 162;
$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);
}