Roman Silver

CSS

:root {
  --roman-silver: #838996;
  --roman-silver-rgb: 131 137 150;
  --roman-silver-oklch: oklch(0.629 0.021 265.9);
}

.element {
  color: var(--roman-silver);
  background-color: hsl(221 8% 55%);
  border-color: oklch(0.629 0.021 265.9);
}

Tailwind CSS v4

@theme {
  --color-roman-silver: #838996;
  --color-roman-silver-50: #f2f5fb;
  --color-roman-silver-100: #e5e8ef;
  --color-roman-silver-200: #d0d4dd;
  --color-roman-silver-300: #b3b7c2;
  --color-roman-silver-400: #999eab;
  --color-roman-silver-500: #808694;
  --color-roman-silver-600: #6c727e;
  --color-roman-silver-700: #565b64;
  --color-roman-silver-800: #3f424a;
  --color-roman-silver-900: #2b2e33;
  --color-roman-silver-950: #181b1f;
}

SCSS

$roman-silver: #838996;
$roman-silver-rgb: 131, 137, 150;
$roman-silver-light: mix(#fff, $roman-silver, 20%);
$roman-silver-dark: mix(#000, $roman-silver, 20%);

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