#726A69

CSS

:root {
  --acoustic-brown: #726a69;
  --acoustic-brown-rgb: 114 106 105;
  --acoustic-brown-oklch: oklch(0.531 0.01 26.1);
}

.element {
  color: var(--acoustic-brown);
  background-color: hsl(7 4% 43%);
  border-color: oklch(0.531 0.01 26.1);
}

Tailwind CSS v4

@theme {
  --color-acoustic-brown: #726a69;
  --color-acoustic-brown-50: #f8f4f3;
  --color-acoustic-brown-100: #ebe7e6;
  --color-acoustic-brown-200: #d8d3d2;
  --color-acoustic-brown-300: #bcb5b4;
  --color-acoustic-brown-400: #a49c9b;
  --color-acoustic-brown-500: #8d8483;
  --color-acoustic-brown-600: #776f6f;
  --color-acoustic-brown-700: #5f5958;
  --color-acoustic-brown-800: #464141;
  --color-acoustic-brown-900: #302d2c;
  --color-acoustic-brown-950: #1d1a1a;
}

SCSS

$acoustic-brown: #726a69;
$acoustic-brown-rgb: 114, 106, 105;
$acoustic-brown-light: mix(#fff, $acoustic-brown, 20%);
$acoustic-brown-dark: mix(#000, $acoustic-brown, 20%);

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