#4D8339

CSS

:root {
  --the-legend-of-green: #4d8339;
  --the-legend-of-green-rgb: 77 131 57;
  --the-legend-of-green-oklch: oklch(0.555 0.121 138);
}

.element {
  color: var(--the-legend-of-green);
  background-color: hsl(104 39% 37%);
  border-color: oklch(0.555 0.121 138);
}

Tailwind CSS v4

@theme {
  --color-the-legend-of-green: #4d8339;
  --color-the-legend-of-green-50: #e4fede;
  --color-the-legend-of-green-100: #d3f2cc;
  --color-the-legend-of-green-200: #b9e2b1;
  --color-the-legend-of-green-300: #96c78c;
  --color-the-legend-of-green-400: #7aaf68;
  --color-the-legend-of-green-500: #5b9845;
  --color-the-legend-of-green-600: #4e813b;
  --color-the-legend-of-green-700: #3e672f;
  --color-the-legend-of-green-800: #2e4c1f;
  --color-the-legend-of-green-900: #1f3514;
  --color-the-legend-of-green-950: #0f2006;
}

SCSS

$the-legend-of-green: #4d8339;
$the-legend-of-green-rgb: 77, 131, 57;
$the-legend-of-green-light: mix(#fff, $the-legend-of-green, 20%);
$the-legend-of-green-dark: mix(#000, $the-legend-of-green, 20%);

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