#506700

CSS

:root {
  --serrano-pepper: #506700;
  --serrano-pepper-rgb: 80 103 0;
  --serrano-pepper-oklch: oklch(0.478 0.118 123.5);
}

.element {
  color: var(--serrano-pepper);
  background-color: hsl(73 100% 20%);
  border-color: oklch(0.478 0.118 123.5);
}

Tailwind CSS v4

@theme {
  --color-serrano-pepper: #506700;
  --color-serrano-pepper-50: #edfcd7;
  --color-serrano-pepper-100: #def0c5;
  --color-serrano-pepper-200: #c8dea7;
  --color-serrano-pepper-300: #a9c27f;
  --color-serrano-pepper-400: #91aa58;
  --color-serrano-pepper-500: #77922e;
  --color-serrano-pepper-600: #657c29;
  --color-serrano-pepper-700: #506321;
  --color-serrano-pepper-800: #3c4814;
  --color-serrano-pepper-900: #29320d;
  --color-serrano-pepper-950: #171e01;
}

SCSS

$serrano-pepper: #506700;
$serrano-pepper-rgb: 80, 103, 0;
$serrano-pepper-light: mix(#fff, $serrano-pepper, 20%);
$serrano-pepper-dark: mix(#000, $serrano-pepper, 20%);

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