#966B57

CSS

:root {
  --leather: #966b57;
  --leather-rgb: 150 107 87;
  --leather-oklch: oklch(0.567 0.063 45.9);
}

.element {
  color: var(--leather);
  background-color: hsl(19 27% 46%);
  border-color: oklch(0.567 0.063 45.9);
}

Tailwind CSS v4

@theme {
  --color-leather: #966b57;
  --color-leather-50: #fff0e6;
  --color-leather-100: #fbe2d6;
  --color-leather-200: #eccdbe;
  --color-leather-300: #d3ae9c;
  --color-leather-400: #bf937f;
  --color-leather-500: #aa7963;
  --color-leather-600: #8f6754;
  --color-leather-700: #735243;
  --color-leather-800: #553b31;
  --color-leather-900: #3b2921;
  --color-leather-950: #251710;
}

SCSS

$leather: #966b57;
$leather-rgb: 150, 107, 87;
$leather-light: mix(#fff, $leather, 20%);
$leather-dark: mix(#000, $leather, 20%);

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