Sticky Black Tarmac

CSS

:root {
  --sticky-black-tarmac: #131212;
  --sticky-black-tarmac-rgb: 19 18 18;
  --sticky-black-tarmac-oklch: oklch(0.183 0.002 17.3);
}

.element {
  color: var(--sticky-black-tarmac);
  background-color: hsl(0 3% 7%);
  border-color: oklch(0.183 0.002 17.3);
}

Tailwind CSS v4

@theme {
  --color-sticky-black-tarmac: #131212;
  --color-sticky-black-tarmac-50: #f5f5f5;
  --color-sticky-black-tarmac-100: #e8e7e7;
  --color-sticky-black-tarmac-200: #d5d4d4;
  --color-sticky-black-tarmac-300: #b8b7b7;
  --color-sticky-black-tarmac-400: #9f9e9e;
  --color-sticky-black-tarmac-500: #878686;
  --color-sticky-black-tarmac-600: #727171;
  --color-sticky-black-tarmac-700: #5b5a5a;
  --color-sticky-black-tarmac-800: #434242;
  --color-sticky-black-tarmac-900: #2e2e2e;
  --color-sticky-black-tarmac-950: #1b1a1a;
}

SCSS

$sticky-black-tarmac: #131212;
$sticky-black-tarmac-rgb: 19, 18, 18;
$sticky-black-tarmac-light: mix(#fff, $sticky-black-tarmac, 20%);
$sticky-black-tarmac-dark: mix(#000, $sticky-black-tarmac, 20%);

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