Black

CSS

:root {
  --black: #000000;
  --black-rgb: 0 0 0;
  --black-oklch: oklch(0 0 0);
}

.element {
  color: var(--black);
  background-color: hsl(0 0% 0%);
  border-color: oklch(0 0 0);
}

Tailwind CSS v4

@theme {
  --color-black: #000000;
  --color-black-50: #f5f5f5;
  --color-black-100: #e8e8e8;
  --color-black-200: #d4d4d4;
  --color-black-300: #b7b7b7;
  --color-black-400: #9e9e9e;
  --color-black-500: #868686;
  --color-black-600: #717171;
  --color-black-700: #5b5b5b;
  --color-black-800: #424242;
  --color-black-900: #2e2e2e;
  --color-black-950: #1b1b1b;
}

SCSS

$black: #000000;
$black-rgb: 0, 0, 0;
$black-light: mix(#fff, $black, 20%);
$black-dark: mix(#000, $black, 20%);

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