Red Brown

CSS

:root {
  --red-brown: #a52a2f;
  --red-brown-rgb: 165 42 47;
  --red-brown-oklch: oklch(0.481 0.159 23.5);
}

.element {
  color: var(--red-brown);
  background-color: hsl(358 59% 41%);
  border-color: oklch(0.481 0.159 23.5);
}

Tailwind CSS v4

@theme {
  --color-red-brown: #a52a2f;
  --color-red-brown-50: #ffe4de;
  --color-red-brown-100: #ffd4cd;
  --color-red-brown-200: #ffbab1;
  --color-red-brown-300: #fe968d;
  --color-red-brown-400: #ee7470;
  --color-red-brown-500: #dc5051;
  --color-red-brown-600: #b94545;
  --color-red-brown-700: #953737;
  --color-red-brown-800: #6f2629;
  --color-red-brown-900: #4e1a1b;
  --color-red-brown-950: #34090c;
}

SCSS

$red-brown: #a52a2f;
$red-brown-rgb: 165, 42, 47;
$red-brown-light: mix(#fff, $red-brown, 20%);
$red-brown-dark: mix(#000, $red-brown, 20%);

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