#7F6A1C

CSS

:root {
  --muddy-brown: #7f6a1c;
  --muddy-brown-rgb: 127 106 28;
  --muddy-brown-oklch: oklch(0.53 0.097 93.2);
}

.element {
  color: var(--muddy-brown);
  background-color: hsl(47 64% 30%);
  border-color: oklch(0.53 0.097 93.2);
}

Tailwind CSS v4

@theme {
  --color-muddy-brown: #7f6a1c;
  --color-muddy-brown-50: #fdf6d7;
  --color-muddy-brown-100: #f2e8c4;
  --color-muddy-brown-200: #e1d5a6;
  --color-muddy-brown-300: #c7b77e;
  --color-muddy-brown-400: #b29d58;
  --color-muddy-brown-500: #9c842f;
  --color-muddy-brown-600: #84702a;
  --color-muddy-brown-700: #6a5a21;
  --color-muddy-brown-800: #4f4116;
  --color-muddy-brown-900: #372d0e;
  --color-muddy-brown-950: #221a02;
}

SCSS

$muddy-brown: #7f6a1c;
$muddy-brown-rgb: 127, 106, 28;
$muddy-brown-light: mix(#fff, $muddy-brown, 20%);
$muddy-brown-dark: mix(#000, $muddy-brown, 20%);

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