#3A8460

CSS

:root {
  --primal-green: #3a8460;
  --primal-green-rgb: 58 132 96;
  --primal-green-oklch: oklch(0.556 0.094 159.9);
}

.element {
  color: var(--primal-green);
  background-color: hsl(151 39% 37%);
  border-color: oklch(0.556 0.094 159.9);
}

Tailwind CSS v4

@theme {
  --color-primal-green: #3a8460;
  --color-primal-green-50: #dffeed;
  --color-primal-green-100: #cdf2de;
  --color-primal-green-200: #b1e1c8;
  --color-primal-green-300: #8cc7a9;
  --color-primal-green-400: #6bb08b;
  --color-primal-green-500: #469970;
  --color-primal-green-600: #3c815f;
  --color-primal-green-700: #30684c;
  --color-primal-green-800: #234c36;
  --color-primal-green-900: #173525;
  --color-primal-green-950: #082013;
}

SCSS

$primal-green: #3a8460;
$primal-green-rgb: 58, 132, 96;
$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);
}