#004F18

CSS

:root {
  --mysterious-mixture: #004f18;
  --mysterious-mixture-rgb: 0 79 24;
  --mysterious-mixture-oklch: oklch(0.372 0.111 147);
}

.element {
  color: var(--mysterious-mixture);
  background-color: hsl(138 100% 15%);
  border-color: oklch(0.372 0.111 147);
}

Tailwind CSS v4

@theme {
  --color-mysterious-mixture: #004f18;
  --color-mysterious-mixture-50: #e0ffe4;
  --color-mysterious-mixture-100: #cff3d4;
  --color-mysterious-mixture-200: #b4e2bb;
  --color-mysterious-mixture-300: #8fc898;
  --color-mysterious-mixture-400: #71b078;
  --color-mysterious-mixture-500: #4f9a59;
  --color-mysterious-mixture-600: #43824c;
  --color-mysterious-mixture-700: #36683c;
  --color-mysterious-mixture-800: #284c29;
  --color-mysterious-mixture-900: #1b351c;
  --color-mysterious-mixture-950: #0b200c;
}

SCSS

$mysterious-mixture: #004f18;
$mysterious-mixture-rgb: 0, 79, 24;
$mysterious-mixture-light: mix(#fff, $mysterious-mixture, 20%);
$mysterious-mixture-dark: mix(#000, $mysterious-mixture, 20%);

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