#49746F

CSS

:root {
  --tropical-rain: #49746f;
  --tropical-rain-rgb: 73 116 111;
  --tropical-rain-oklch: oklch(0.526 0.049 186.5);
}

.element {
  color: var(--tropical-rain);
  background-color: hsl(173 23% 37%);
  border-color: oklch(0.526 0.049 186.5);
}

Tailwind CSS v4

@theme {
  --color-tropical-rain: #49746f;
  --color-tropical-rain-50: #e6faf8;
  --color-tropical-rain-100: #d7edeb;
  --color-tropical-rain-200: #bedbd8;
  --color-tropical-rain-300: #9cc0bc;
  --color-tropical-rain-400: #7ea8a3;
  --color-tropical-rain-500: #60918b;
  --color-tropical-rain-600: #527b76;
  --color-tropical-rain-700: #41625e;
  --color-tropical-rain-800: #2f4844;
  --color-tropical-rain-900: #20322f;
  --color-tropical-rain-950: #0f1e1c;
}

SCSS

$tropical-rain: #49746f;
$tropical-rain-rgb: 73, 116, 111;
$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);
}