#7F6C00

CSS

:root {
  --muddy-brown: #7f6c00;
  --muddy-brown-rgb: 127 108 0;
  --muddy-brown-oklch: oklch(0.533 0.11 96.9);
}

.element {
  color: var(--muddy-brown);
  background-color: hsl(51 100% 25%);
  border-color: oklch(0.533 0.11 96.9);
}

Tailwind CSS v4

@theme {
  --color-muddy-brown: #7f6c00;
  --color-muddy-brown-50: #fdf6d3;
  --color-muddy-brown-100: #f1e9bf;
  --color-muddy-brown-200: #e0d69f;
  --color-muddy-brown-300: #c5b976;
  --color-muddy-brown-400: #b19f4d;
  --color-muddy-brown-500: #9b8518;
  --color-muddy-brown-600: #837119;
  --color-muddy-brown-700: #695a14;
  --color-muddy-brown-800: #4e420b;
  --color-muddy-brown-900: #362d07;
  --color-muddy-brown-950: #211a00;
}

SCSS

$muddy-brown: #7f6c00;
$muddy-brown-rgb: 127, 108, 0;
$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);
}