#8D6250

CSS

:root {
  --weathered-leather: #8d6250;
  --weathered-leather-rgb: 141 98 80;
  --weathered-leather-oklch: oklch(0.537 0.063 43.6);
}

.element {
  color: var(--weathered-leather);
  background-color: hsl(18 28% 43%);
  border-color: oklch(0.537 0.063 43.6);
}

Tailwind CSS v4

@theme {
  --color-weathered-leather: #8d6250;
  --color-weathered-leather-50: #fff0e7;
  --color-weathered-leather-100: #fbe2d7;
  --color-weathered-leather-200: #eccdbe;
  --color-weathered-leather-300: #d4ae9d;
  --color-weathered-leather-400: #bf9381;
  --color-weathered-leather-500: #aa7964;
  --color-weathered-leather-600: #906655;
  --color-weathered-leather-700: #735244;
  --color-weathered-leather-800: #553b31;
  --color-weathered-leather-900: #3c2921;
  --color-weathered-leather-950: #251611;
}

SCSS

$weathered-leather: #8d6250;
$weathered-leather-rgb: 141, 98, 80;
$weathered-leather-light: mix(#fff, $weathered-leather, 20%);
$weathered-leather-dark: mix(#000, $weathered-leather, 20%);

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