Plain Old Brown

CSS

:root {
  --plain-old-brown: #905100;
  --plain-old-brown-rgb: 144 81 0;
  --plain-old-brown-oklch: oklch(0.499 0.115 62);
}

.element {
  color: var(--plain-old-brown);
  background-color: hsl(34 100% 28%);
  border-color: oklch(0.499 0.115 62);
}

Tailwind CSS v4

@theme {
  --color-plain-old-brown: #905100;
  --color-plain-old-brown-50: #ffefd4;
  --color-plain-old-brown-100: #ffe1c1;
  --color-plain-old-brown-200: #f8cba1;
  --color-plain-old-brown-300: #e1ab78;
  --color-plain-old-brown-400: #cf8e53;
  --color-plain-old-brown-500: #bb7227;
  --color-plain-old-brown-600: #9e6123;
  --color-plain-old-brown-700: #7f4e1c;
  --color-plain-old-brown-800: #5f3813;
  --color-plain-old-brown-900: #42260c;
  --color-plain-old-brown-950: #2b1401;
}

SCSS

$plain-old-brown: #905100;
$plain-old-brown-rgb: 144, 81, 0;
$plain-old-brown-light: mix(#fff, $plain-old-brown, 20%);
$plain-old-brown-dark: mix(#000, $plain-old-brown, 20%);

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