Black Umber

CSS

:root {
  --black-umber: #1f1916;
  --black-umber-rgb: 31 25 22;
  --black-umber-oklch: oklch(0.219 0.011 48.2);
}

.element {
  color: var(--black-umber);
  background-color: hsl(20 17% 10%);
  border-color: oklch(0.219 0.011 48.2);
}

Tailwind CSS v4

@theme {
  --color-black-umber: #1f1916;
  --color-black-umber-50: #f8f4f2;
  --color-black-umber-100: #ebe7e4;
  --color-black-umber-200: #d8d3d0;
  --color-black-umber-300: #bcb6b2;
  --color-black-umber-400: #a49d99;
  --color-black-umber-500: #8d8480;
  --color-black-umber-600: #77706c;
  --color-black-umber-700: #5f5956;
  --color-black-umber-800: #46413f;
  --color-black-umber-900: #302d2b;
  --color-black-umber-950: #1d1a19;
}

SCSS

$black-umber: #1f1916;
$black-umber-rgb: 31, 25, 22;
$black-umber-light: mix(#fff, $black-umber, 20%);
$black-umber-dark: mix(#000, $black-umber, 20%);

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