#00839E

CSS

:root {
  --ahoy-blue: #00839e;
  --ahoy-blue-rgb: 0 131 158;
  --ahoy-blue-oklch: oklch(0.564 0.102 219);
}

.element {
  color: var(--ahoy-blue);
  background-color: hsl(190 100% 31%);
  border-color: oklch(0.564 0.102 219);
}

Tailwind CSS v4

@theme {
  --color-ahoy-blue: #00839e;
  --color-ahoy-blue-50: #d6fdff;
  --color-ahoy-blue-100: #c3f0ff;
  --color-ahoy-blue-200: #a4dff3;
  --color-ahoy-blue-300: #7ac4dc;
  --color-ahoy-blue-400: #4dadc7;
  --color-ahoy-blue-500: #0095b4;
  --color-ahoy-blue-600: #0d7e98;
  --color-ahoy-blue-700: #0d657a;
  --color-ahoy-blue-800: #044b59;
  --color-ahoy-blue-900: #04343e;
  --color-ahoy-blue-950: #001f28;
}

SCSS

$ahoy-blue: #00839e;
$ahoy-blue-rgb: 0, 131, 158;
$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);
}