#23809D

CSS

:root {
  --ahoy-blue: #23809d;
  --ahoy-blue-rgb: 35 128 157;
  --ahoy-blue-oklch: oklch(0.56 0.094 223.7);
}

.element {
  color: var(--ahoy-blue);
  background-color: hsl(194 64% 38%);
  border-color: oklch(0.56 0.094 223.7);
}

Tailwind CSS v4

@theme {
  --color-ahoy-blue: #23809d;
  --color-ahoy-blue-50: #dafbff;
  --color-ahoy-blue-100: #c8efff;
  --color-ahoy-blue-200: #aaddf3;
  --color-ahoy-blue-300: #82c2dc;
  --color-ahoy-blue-400: #5aabc7;
  --color-ahoy-blue-500: #2b93b4;
  --color-ahoy-blue-600: #277c98;
  --color-ahoy-blue-700: #1f647a;
  --color-ahoy-blue-800: #134959;
  --color-ahoy-blue-900: #0c333f;
  --color-ahoy-blue-950: #001f28;
}

SCSS

$ahoy-blue: #23809d;
$ahoy-blue-rgb: 35, 128, 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);
}