#A09B81

CSS

:root {
  --knock-on-wood: #a09b81;
  --knock-on-wood-rgb: 160 155 129;
  --knock-on-wood-oklch: oklch(0.687 0.037 98.3);
}

.element {
  color: var(--knock-on-wood);
  background-color: hsl(50 14% 57%);
  border-color: oklch(0.687 0.037 98.3);
}

Tailwind CSS v4

@theme {
  --color-knock-on-wood: #a09b81;
  --color-knock-on-wood-50: #f7f6ea;
  --color-knock-on-wood-100: #eae8db;
  --color-knock-on-wood-200: #d7d5c3;
  --color-knock-on-wood-300: #bbb8a3;
  --color-knock-on-wood-400: #a49f86;
  --color-knock-on-wood-500: #8c876b;
  --color-knock-on-wood-600: #77725b;
  --color-knock-on-wood-700: #5f5b48;
  --color-knock-on-wood-800: #464334;
  --color-knock-on-wood-900: #302e23;
  --color-knock-on-wood-950: #1d1b12;
}

SCSS

$knock-on-wood: #a09b81;
$knock-on-wood-rgb: 160, 155, 129;
$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);
}