#477472

CSS

:root {
  --tropical-rain: #477472;
  --tropical-rain-rgb: 71 116 114;
  --tropical-rain-oklch: oklch(0.526 0.05 192.1);
}

.element {
  color: var(--tropical-rain);
  background-color: hsl(177 24% 37%);
  border-color: oklch(0.526 0.05 192.1);
}

Tailwind CSS v4

@theme {
  --color-tropical-rain: #477472;
  --color-tropical-rain-50: #e6faf9;
  --color-tropical-rain-100: #d6eded;
  --color-tropical-rain-200: #bddbda;
  --color-tropical-rain-300: #9bc0bf;
  --color-tropical-rain-400: #7ca8a6;
  --color-tropical-rain-500: #5e918f;
  --color-tropical-rain-600: #507b79;
  --color-tropical-rain-700: #406261;
  --color-tropical-rain-800: #2e4846;
  --color-tropical-rain-900: #1f3231;
  --color-tropical-rain-950: #0e1e1d;
}

SCSS

$tropical-rain: #477472;
$tropical-rain-rgb: 71, 116, 114;
$tropical-rain-light: mix(#fff, $tropical-rain, 20%);
$tropical-rain-dark: mix(#000, $tropical-rain, 20%);

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