#25809B

CSS

:root {
  --ahoy-blue: #25809b;
  --ahoy-blue-rgb: 37 128 155;
  --ahoy-blue-oklch: oklch(0.56 0.092 222.2);
}

.element {
  color: var(--ahoy-blue);
  background-color: hsl(194 61% 38%);
  border-color: oklch(0.56 0.092 222.2);
}

Tailwind CSS v4

@theme {
  --color-ahoy-blue: #25809b;
  --color-ahoy-blue-50: #dafcff;
  --color-ahoy-blue-100: #c8efff;
  --color-ahoy-blue-200: #aaddf2;
  --color-ahoy-blue-300: #83c2da;
  --color-ahoy-blue-400: #5babc5;
  --color-ahoy-blue-500: #2d93b2;
  --color-ahoy-blue-600: #297d96;
  --color-ahoy-blue-700: #216478;
  --color-ahoy-blue-800: #144a58;
  --color-ahoy-blue-900: #0d333e;
  --color-ahoy-blue-950: #011f27;
}

SCSS

$ahoy-blue: #25809b;
$ahoy-blue-rgb: 37, 128, 155;
$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);
}