#16855C

CSS

:root {
  --primal-green: #16855c;
  --primal-green-rgb: 22 133 92;
  --primal-green-oklch: oklch(0.548 0.114 162);
}

.element {
  color: var(--primal-green);
  background-color: hsl(158 72% 30%);
  border-color: oklch(0.548 0.114 162);
}

Tailwind CSS v4

@theme {
  --color-primal-green: #16855c;
  --color-primal-green-50: #d8ffec;
  --color-primal-green-100: #c6f5de;
  --color-primal-green-200: #a7e4c7;
  --color-primal-green-300: #7ecaa8;
  --color-primal-green-400: #58b38a;
  --color-primal-green-500: #249d6e;
  --color-primal-green-600: #22855e;
  --color-primal-green-700: #1c6a4b;
  --color-primal-green-800: #144e34;
  --color-primal-green-900: #0d3624;
  --color-primal-green-950: #012113;
}

SCSS

$primal-green: #16855c;
$primal-green-rgb: 22, 133, 92;
$primal-green-light: mix(#fff, $primal-green, 20%);
$primal-green-dark: mix(#000, $primal-green, 20%);

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