Havana Blue

CSS

:root {
  --havana-blue: #a5dbe5;
  --havana-blue-rgb: 165 219 229;
  --havana-blue-oklch: oklch(0.857 0.057 210.2);
}

.element {
  color: var(--havana-blue);
  background-color: hsl(189 55% 77%);
  border-color: oklch(0.857 0.057 210.2);
}

Tailwind CSS v4

@theme {
  --color-havana-blue: #a5dbe5;
  --color-havana-blue-50: #e4faff;
  --color-havana-blue-100: #d3edf3;
  --color-havana-blue-200: #b9dbe3;
  --color-havana-blue-300: #96c0c9;
  --color-havana-blue-400: #77a8b1;
  --color-havana-blue-500: #57919b;
  --color-havana-blue-600: #4a7a83;
  --color-havana-blue-700: #3b6269;
  --color-havana-blue-800: #2a484d;
  --color-havana-blue-900: #1c3235;
  --color-havana-blue-950: #0c1e20;
}

SCSS

$havana-blue: #a5dbe5;
$havana-blue-rgb: 165, 219, 229;
$havana-blue-light: mix(#fff, $havana-blue, 20%);
$havana-blue-dark: mix(#000, $havana-blue, 20%);

.element {
  color: $havana-blue;
  box-shadow: 0 0 0 2px rgba($havana-blue, 0.35);
}