#147F9C

CSS

:root {
  --ahoy-blue: #147f9c;
  --ahoy-blue-rgb: 20 127 156;
  --ahoy-blue-oklch: oklch(0.554 0.098 222.3);
}

.element {
  color: var(--ahoy-blue);
  background-color: hsl(193 77% 35%);
  border-color: oklch(0.554 0.098 222.3);
}

Tailwind CSS v4

@theme {
  --color-ahoy-blue: #147f9c;
  --color-ahoy-blue-50: #d8fcff;
  --color-ahoy-blue-100: #c6f0ff;
  --color-ahoy-blue-200: #a7def4;
  --color-ahoy-blue-300: #7ec3dd;
  --color-ahoy-blue-400: #55abc8;
  --color-ahoy-blue-500: #1e94b5;
  --color-ahoy-blue-600: #1e7d99;
  --color-ahoy-blue-700: #18647a;
  --color-ahoy-blue-800: #0d4a5a;
  --color-ahoy-blue-900: #09333f;
  --color-ahoy-blue-950: #001f28;
}

SCSS

$ahoy-blue: #147f9c;
$ahoy-blue-rgb: 20, 127, 156;
$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);
}