#787377

CSS

:root {
  --bank-vault: #787377;
  --bank-vault-rgb: 120 115 119;
  --bank-vault-oklch: oklch(0.561 0.009 332.2);
}

.element {
  color: var(--bank-vault);
  background-color: hsl(312 2% 46%);
  border-color: oklch(0.561 0.009 332.2);
}

Tailwind CSS v4

@theme {
  --color-bank-vault: #787377;
  --color-bank-vault-50: #f7f4f6;
  --color-bank-vault-100: #eae7e9;
  --color-bank-vault-200: #d7d3d6;
  --color-bank-vault-300: #bab6b9;
  --color-bank-vault-400: #a29da1;
  --color-bank-vault-500: #8a8489;
  --color-bank-vault-600: #757074;
  --color-bank-vault-700: #5d595c;
  --color-bank-vault-800: #444144;
  --color-bank-vault-900: #2f2d2f;
  --color-bank-vault-950: #1c1a1b;
}

SCSS

$bank-vault: #787377;
$bank-vault-rgb: 120, 115, 119;
$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);
}