#127F9D

CSS

:root {
  --ahoy-blue: #127f9d;
  --ahoy-blue-rgb: 18 127 157;
  --ahoy-blue-oklch: oklch(0.555 0.099 223);
}

.element {
  color: var(--ahoy-blue);
  background-color: hsl(193 79% 34%);
  border-color: oklch(0.555 0.099 223);
}

Tailwind CSS v4

@theme {
  --color-ahoy-blue: #127f9d;
  --color-ahoy-blue-50: #d8fcff;
  --color-ahoy-blue-100: #c6f0ff;
  --color-ahoy-blue-200: #a7def4;
  --color-ahoy-blue-300: #7ec3de;
  --color-ahoy-blue-400: #54abc9;
  --color-ahoy-blue-500: #1c94b6;
  --color-ahoy-blue-600: #1d7d99;
  --color-ahoy-blue-700: #17647b;
  --color-ahoy-blue-800: #0c4a5a;
  --color-ahoy-blue-900: #08333f;
  --color-ahoy-blue-950: #001f28;
}

SCSS

$ahoy-blue: #127f9d;
$ahoy-blue-rgb: 18, 127, 157;
$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);
}