#0083A3

CSS

:root {
  --ahoy-blue: #0083a3;
  --ahoy-blue-rgb: 0 131 163;
  --ahoy-blue-oklch: oklch(0.566 0.105 222.9);
}

.element {
  color: var(--ahoy-blue);
  background-color: hsl(192 100% 32%);
  border-color: oklch(0.566 0.105 222.9);
}

Tailwind CSS v4

@theme {
  --color-ahoy-blue: #0083a3;
  --color-ahoy-blue-50: #d6fcff;
  --color-ahoy-blue-100: #c3f0ff;
  --color-ahoy-blue-200: #a4dff6;
  --color-ahoy-blue-300: #79c3e0;
  --color-ahoy-blue-400: #4daccc;
  --color-ahoy-blue-500: #0095b9;
  --color-ahoy-blue-600: #0b7e9c;
  --color-ahoy-blue-700: #0b657d;
  --color-ahoy-blue-800: #034a5c;
  --color-ahoy-blue-900: #033440;
  --color-ahoy-blue-950: #001f29;
}

SCSS

$ahoy-blue: #0083a3;
$ahoy-blue-rgb: 0, 131, 163;
$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);
}