#9F9B83

CSS

:root {
  --knock-on-wood: #9f9b83;
  --knock-on-wood-rgb: 159 155 131;
  --knock-on-wood-oklch: oklch(0.686 0.034 99.4);
}

.element {
  color: var(--knock-on-wood);
  background-color: hsl(51 13% 57%);
  border-color: oklch(0.686 0.034 99.4);
}

Tailwind CSS v4

@theme {
  --color-knock-on-wood: #9f9b83;
  --color-knock-on-wood-50: #f7f6eb;
  --color-knock-on-wood-100: #eae8dc;
  --color-knock-on-wood-200: #d7d5c5;
  --color-knock-on-wood-300: #bbb8a5;
  --color-knock-on-wood-400: #a39f88;
  --color-knock-on-wood-500: #8b876d;
  --color-knock-on-wood-600: #76725d;
  --color-knock-on-wood-700: #5e5b4a;
  --color-knock-on-wood-800: #454335;
  --color-knock-on-wood-900: #302e24;
  --color-knock-on-wood-950: #1c1b13;
}

SCSS

$knock-on-wood: #9f9b83;
$knock-on-wood-rgb: 159, 155, 131;
$knock-on-wood-light: mix(#fff, $knock-on-wood, 20%);
$knock-on-wood-dark: mix(#000, $knock-on-wood, 20%);

.element {
  color: $knock-on-wood;
  box-shadow: 0 0 0 2px rgba($knock-on-wood, 0.35);
}