#7B6C10

CSS

:root {
  --muddy-brown: #7b6c10;
  --muddy-brown-rgb: 123 108 16;
  --muddy-brown-oklch: oklch(0.53 0.105 99);
}

.element {
  color: var(--muddy-brown);
  background-color: hsl(52 77% 27%);
  border-color: oklch(0.53 0.105 99);
}

Tailwind CSS v4

@theme {
  --color-muddy-brown: #7b6c10;
  --color-muddy-brown-50: #fbf7d5;
  --color-muddy-brown-100: #efeac2;
  --color-muddy-brown-200: #ddd6a3;
  --color-muddy-brown-300: #c3b97a;
  --color-muddy-brown-400: #aea053;
  --color-muddy-brown-500: #988725;
  --color-muddy-brown-600: #807222;
  --color-muddy-brown-700: #675b1b;
  --color-muddy-brown-800: #4d4211;
  --color-muddy-brown-900: #352e0a;
  --color-muddy-brown-950: #201a01;
}

SCSS

$muddy-brown: #7b6c10;
$muddy-brown-rgb: 123, 108, 16;
$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);
}