#006748

CSS

:root {
  --into-the-green: #006748;
  --into-the-green-rgb: 0 103 72;
  --into-the-green-oklch: oklch(0.455 0.097 164.2);
}

.element {
  color: var(--into-the-green);
  background-color: hsl(162 100% 20%);
  border-color: oklch(0.455 0.097 164.2);
}

Tailwind CSS v4

@theme {
  --color-into-the-green: #006748;
  --color-into-the-green-50: #dcffef;
  --color-into-the-green-100: #cbf3e1;
  --color-into-the-green-200: #ade2cb;
  --color-into-the-green-300: #87c8ac;
  --color-into-the-green-400: #64b18f;
  --color-into-the-green-500: #3b9a75;
  --color-into-the-green-600: #348263;
  --color-into-the-green-700: #29684f;
  --color-into-the-green-800: #1e4d38;
  --color-into-the-green-900: #143526;
  --color-into-the-green-950: #052015;
}

SCSS

$into-the-green: #006748;
$into-the-green-rgb: 0, 103, 72;
$into-the-green-light: mix(#fff, $into-the-green, 20%);
$into-the-green-dark: mix(#000, $into-the-green, 20%);

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