Black Oak

CSS

:root {
  --black-oak: #4e4f4e;
  --black-oak-rgb: 78 79 78;
  --black-oak-oklch: oklch(0.426 0.002 145.5);
}

.element {
  color: var(--black-oak);
  background-color: hsl(120 1% 31%);
  border-color: oklch(0.426 0.002 145.5);
}

Tailwind CSS v4

@theme {
  --color-black-oak: #4e4f4e;
  --color-black-oak-50: #f5f5f5;
  --color-black-oak-100: #e7e8e7;
  --color-black-oak-200: #d3d4d4;
  --color-black-oak-300: #b7b8b7;
  --color-black-oak-400: #9e9f9e;
  --color-black-oak-500: #858685;
  --color-black-oak-600: #717271;
  --color-black-oak-700: #5a5b5a;
  --color-black-oak-800: #424242;
  --color-black-oak-900: #2d2e2d;
  --color-black-oak-950: #1a1b1a;
}

SCSS

$black-oak: #4e4f4e;
$black-oak-rgb: 78, 79, 78;
$black-oak-light: mix(#fff, $black-oak, 20%);
$black-oak-dark: mix(#000, $black-oak, 20%);

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