#4A3D31

CSS

:root {
  --batch-brew: #4a3d31;
  --batch-brew-rgb: 74 61 49;
  --batch-brew-oklch: oklch(0.37 0.027 64.6);
}

.element {
  color: var(--batch-brew);
  background-color: hsl(29 20% 24%);
  border-color: oklch(0.37 0.027 64.6);
}

Tailwind CSS v4

@theme {
  --color-batch-brew: #4a3d31;
  --color-batch-brew-50: #fbf4ed;
  --color-batch-brew-100: #eee6df;
  --color-batch-brew-200: #dcd2c8;
  --color-batch-brew-300: #c1b5a9;
  --color-batch-brew-400: #aa9c8e;
  --color-batch-brew-500: #938374;
  --color-batch-brew-600: #7c6f62;
  --color-batch-brew-700: #64594e;
  --color-batch-brew-800: #494039;
  --color-batch-brew-900: #332c27;
  --color-batch-brew-950: #1f1a15;
}

SCSS

$batch-brew: #4a3d31;
$batch-brew-rgb: 74, 61, 49;
$batch-brew-light: mix(#fff, $batch-brew, 20%);
$batch-brew-dark: mix(#000, $batch-brew, 20%);

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