#7C6C0C

CSS

:root {
  --muddy-brown: #7c6c0c;
  --muddy-brown-rgb: 124 108 12;
  --muddy-brown-oklch: oklch(0.531 0.106 98.5);
}

.element {
  color: var(--muddy-brown);
  background-color: hsl(51 82% 27%);
  border-color: oklch(0.531 0.106 98.5);
}

Tailwind CSS v4

@theme {
  --color-muddy-brown: #7c6c0c;
  --color-muddy-brown-50: #fcf7d4;
  --color-muddy-brown-100: #efeac1;
  --color-muddy-brown-200: #ded6a2;
  --color-muddy-brown-300: #c3b979;
  --color-muddy-brown-400: #ae9f51;
  --color-muddy-brown-500: #988622;
  --color-muddy-brown-600: #817220;
  --color-muddy-brown-700: #675b19;
  --color-muddy-brown-800: #4d420f;
  --color-muddy-brown-900: #362e09;
  --color-muddy-brown-950: #211a00;
}

SCSS

$muddy-brown: #7c6c0c;
$muddy-brown-rgb: 124, 108, 12;
$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);
}