#7B6769

CSS

:root {
  --chimaera: #7b6769;
  --chimaera-rgb: 123 103 105;
  --chimaera-oklch: oklch(0.534 0.026 11.2);
}

.element {
  color: var(--chimaera);
  background-color: hsl(354 9% 44%);
  border-color: oklch(0.534 0.026 11.2);
}

Tailwind CSS v4

@theme {
  --color-chimaera: #7b6769;
  --color-chimaera-50: #fcf2f3;
  --color-chimaera-100: #f0e5e5;
  --color-chimaera-200: #dfd0d1;
  --color-chimaera-300: #c4b2b3;
  --color-chimaera-400: #ad999a;
  --color-chimaera-500: #968082;
  --color-chimaera-600: #7f6c6e;
  --color-chimaera-700: #665658;
  --color-chimaera-800: #4b3f40;
  --color-chimaera-900: #342b2c;
  --color-chimaera-950: #1f1919;
}

SCSS

$chimaera: #7b6769;
$chimaera-rgb: 123, 103, 105;
$chimaera-light: mix(#fff, $chimaera, 20%);
$chimaera-dark: mix(#000, $chimaera, 20%);

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