#993F1D

CSS

:root {
  --hot-brown: #993f1d;
  --hot-brown-rgb: 153 63 29;
  --hot-brown-oklch: oklch(0.484 0.129 39.8);
}

.element {
  color: var(--hot-brown);
  background-color: hsl(16 68% 36%);
  border-color: oklch(0.484 0.129 39.8);
}

Tailwind CSS v4

@theme {
  --color-hot-brown: #993f1d;
  --color-hot-brown-50: #ffead9;
  --color-hot-brown-100: #ffdbc7;
  --color-hot-brown-200: #ffc3a9;
  --color-hot-brown-300: #f0a183;
  --color-hot-brown-400: #df8262;
  --color-hot-brown-500: #cc643e;
  --color-hot-brown-600: #ac5536;
  --color-hot-brown-700: #8a442b;
  --color-hot-brown-800: #67301f;
  --color-hot-brown-900: #492114;
  --color-hot-brown-950: #2f1006;
}

SCSS

$hot-brown: #993f1d;
$hot-brown-rgb: 153, 63, 29;
$hot-brown-light: mix(#fff, $hot-brown, 20%);
$hot-brown-dark: mix(#000, $hot-brown, 20%);

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