#7A3428

CSS

:root {
  --ebi-brown: #7a3428;
  --ebi-brown-rgb: 122 52 40;
  --ebi-brown-oklch: oklch(0.418 0.101 31.5);
}

.element {
  color: var(--ebi-brown);
  background-color: hsl(9 51% 32%);
  border-color: oklch(0.418 0.101 31.5);
}

Tailwind CSS v4

@theme {
  --color-ebi-brown: #7a3428;
  --color-ebi-brown-50: #ffece3;
  --color-ebi-brown-100: #ffddd2;
  --color-ebi-brown-200: #fcc5b9;
  --color-ebi-brown-300: #e6a596;
  --color-ebi-brown-400: #d38879;
  --color-ebi-brown-500: #c06b5c;
  --color-ebi-brown-600: #a25b4e;
  --color-ebi-brown-700: #82493e;
  --color-ebi-brown-800: #61342d;
  --color-ebi-brown-900: #44241f;
  --color-ebi-brown-950: #2c120f;
}

SCSS

$ebi-brown: #7a3428;
$ebi-brown-rgb: 122, 52, 40;
$ebi-brown-light: mix(#fff, $ebi-brown, 20%);
$ebi-brown-dark: mix(#000, $ebi-brown, 20%);

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