#C68A50

CSS

:root {
  --butter-bronze: #c68a50;
  --butter-bronze-rgb: 198 138 80;
  --butter-bronze-oklch: oklch(0.681 0.105 63.5);
}

.element {
  color: var(--butter-bronze);
  background-color: hsl(29 51% 55%);
  border-color: oklch(0.681 0.105 63.5);
}

Tailwind CSS v4

@theme {
  --color-butter-bronze: #c68a50;
  --color-butter-bronze-50: #fff0d6;
  --color-butter-bronze-100: #ffe2c4;
  --color-butter-bronze-200: #f4cca6;
  --color-butter-bronze-300: #ddad7e;
  --color-butter-bronze-400: #ca915a;
  --color-butter-bronze-500: #b67532;
  --color-butter-bronze-600: #9a642c;
  --color-butter-bronze-700: #7b5023;
  --color-butter-bronze-800: #5c3918;
  --color-butter-bronze-900: #402710;
  --color-butter-bronze-950: #291503;
}

SCSS

$butter-bronze: #c68a50;
$butter-bronze-rgb: 198, 138, 80;
$butter-bronze-light: mix(#fff, $butter-bronze, 20%);
$butter-bronze-dark: mix(#000, $butter-bronze, 20%);

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