#767476

CSS

:root {
  --bank-vault: #767476;
  --bank-vault-rgb: 118 116 118;
  --bank-vault-oklch: oklch(0.561 0.004 325.6);
}

.element {
  color: var(--bank-vault);
  background-color: hsl(300 1% 46%);
  border-color: oklch(0.561 0.004 325.6);
}

Tailwind CSS v4

@theme {
  --color-bank-vault: #767476;
  --color-bank-vault-50: #f6f5f6;
  --color-bank-vault-100: #e8e7e8;
  --color-bank-vault-200: #d5d4d5;
  --color-bank-vault-300: #b8b7b8;
  --color-bank-vault-400: #a09ea0;
  --color-bank-vault-500: #878587;
  --color-bank-vault-600: #737173;
  --color-bank-vault-700: #5c5a5c;
  --color-bank-vault-800: #434243;
  --color-bank-vault-900: #2e2d2e;
  --color-bank-vault-950: #1b1a1b;
}

SCSS

$bank-vault: #767476;
$bank-vault-rgb: 118, 116, 118;
$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);
}