#110D0B

CSS

:root {
  --black-sheep: #110d0b;
  --black-sheep-rgb: 17 13 11;
  --black-sheep-oklch: oklch(0.163 0.008 48.2);
}

.element {
  color: var(--black-sheep);
  background-color: hsl(20 21% 5%);
  border-color: oklch(0.163 0.008 48.2);
}

Tailwind CSS v4

@theme {
  --color-black-sheep: #110d0b;
  --color-black-sheep-50: #f7f4f3;
  --color-black-sheep-100: #eae7e5;
  --color-black-sheep-200: #d7d3d1;
  --color-black-sheep-300: #bbb6b4;
  --color-black-sheep-400: #a39d9a;
  --color-black-sheep-500: #8b8582;
  --color-black-sheep-600: #76706e;
  --color-black-sheep-700: #5e5a58;
  --color-black-sheep-800: #454240;
  --color-black-sheep-900: #302d2c;
  --color-black-sheep-950: #1c1a19;
}

SCSS

$black-sheep: #110d0b;
$black-sheep-rgb: 17, 13, 11;
$black-sheep-light: mix(#fff, $black-sheep, 20%);
$black-sheep-dark: mix(#000, $black-sheep, 20%);

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