#29809C

CSS

:root {
  --ahoy-blue: #29809c;
  --ahoy-blue-rgb: 41 128 156;
  --ahoy-blue-oklch: oklch(0.561 0.091 223.7);
}

.element {
  color: var(--ahoy-blue);
  background-color: hsl(195 58% 39%);
  border-color: oklch(0.561 0.091 223.7);
}

Tailwind CSS v4

@theme {
  --color-ahoy-blue: #29809c;
  --color-ahoy-blue-50: #dbfbff;
  --color-ahoy-blue-100: #c9efff;
  --color-ahoy-blue-200: #abddf2;
  --color-ahoy-blue-300: #84c2db;
  --color-ahoy-blue-400: #5daac6;
  --color-ahoy-blue-500: #3193b2;
  --color-ahoy-blue-600: #2c7c97;
  --color-ahoy-blue-700: #236379;
  --color-ahoy-blue-800: #164959;
  --color-ahoy-blue-900: #0e333e;
  --color-ahoy-blue-950: #021e27;
}

SCSS

$ahoy-blue: #29809c;
$ahoy-blue-rgb: 41, 128, 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);
}