Alton Brown

CSS

:root {
  --alton-brown: #5a464b;
  --alton-brown-rgb: 90 70 75;
  --alton-brown-oklch: oklch(0.417 0.028 1.7);
}

.element {
  color: var(--alton-brown);
  background-color: hsl(345 13% 31%);
  border-color: oklch(0.417 0.028 1.7);
}

Tailwind CSS v4

@theme {
  --color-alton-brown: #5a464b;
  --color-alton-brown-50: #fdf2f4;
  --color-alton-brown-100: #f1e4e7;
  --color-alton-brown-200: #e0cfd3;
  --color-alton-brown-300: #c5b2b6;
  --color-alton-brown-400: #ae989d;
  --color-alton-brown-500: #977f85;
  --color-alton-brown-600: #806b70;
  --color-alton-brown-700: #66565a;
  --color-alton-brown-800: #4b3e42;
  --color-alton-brown-900: #342b2d;
  --color-alton-brown-950: #20181a;
}

SCSS

$alton-brown: #5a464b;
$alton-brown-rgb: 90, 70, 75;
$alton-brown-light: mix(#fff, $alton-brown, 20%);
$alton-brown-dark: mix(#000, $alton-brown, 20%);

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