#5BDADE

CSS

:root {
  --hammam-blue: #5bdade;
  --hammam-blue-rgb: 91 218 222;
  --hammam-blue-oklch: oklch(0.82 0.111 198.1);
}

.element {
  color: var(--hammam-blue);
  background-color: hsl(182 66% 61%);
  border-color: oklch(0.82 0.111 198.1);
}

Tailwind CSS v4

@theme {
  --color-hammam-blue: #5bdade;
  --color-hammam-blue-50: #d1ffff;
  --color-hammam-blue-100: #bdf4f7;
  --color-hammam-blue-200: #9ae3e7;
  --color-hammam-blue-300: #6bc9ce;
  --color-hammam-blue-400: #35b2b6;
  --color-hammam-blue-500: #009ca1;
  --color-hammam-blue-600: #008488;
  --color-hammam-blue-700: #00696d;
  --color-hammam-blue-800: #004e4f;
  --color-hammam-blue-900: #003637;
  --color-hammam-blue-950: #002122;
}

SCSS

$hammam-blue: #5bdade;
$hammam-blue-rgb: 91, 218, 222;
$hammam-blue-light: mix(#fff, $hammam-blue, 20%);
$hammam-blue-dark: mix(#000, $hammam-blue, 20%);

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