#7A7574

CSS

:root {
  --bank-vault: #7a7574;
  --bank-vault-rgb: 122 117 116;
  --bank-vault-oklch: oklch(0.567 0.006 31.1);
}

.element {
  color: var(--bank-vault);
  background-color: hsl(10 3% 47%);
  border-color: oklch(0.567 0.006 31.1);
}

Tailwind CSS v4

@theme {
  --color-bank-vault: #7a7574;
  --color-bank-vault-50: #f7f4f4;
  --color-bank-vault-100: #eae7e6;
  --color-bank-vault-200: #d7d3d2;
  --color-bank-vault-300: #bab6b5;
  --color-bank-vault-400: #a29d9c;
  --color-bank-vault-500: #8a8584;
  --color-bank-vault-600: #75706f;
  --color-bank-vault-700: #5e5a59;
  --color-bank-vault-800: #444241;
  --color-bank-vault-900: #2f2d2d;
  --color-bank-vault-950: #1c1a1a;
}

SCSS

$bank-vault: #7a7574;
$bank-vault-rgb: 122, 117, 116;
$bank-vault-light: mix(#fff, $bank-vault, 20%);
$bank-vault-dark: mix(#000, $bank-vault, 20%);

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