Volcanic Glass

CSS

:root {
  --volcanic-glass: #615c60;
  --volcanic-glass-rgb: 97 92 96;
  --volcanic-glass-oklch: oklch(0.481 0.009 332.3);
}

.element {
  color: var(--volcanic-glass);
  background-color: hsl(312 3% 37%);
  border-color: oklch(0.481 0.009 332.3);
}

Tailwind CSS v4

@theme {
  --color-volcanic-glass: #615c60;
  --color-volcanic-glass-50: #f7f4f6;
  --color-volcanic-glass-100: #eae7e9;
  --color-volcanic-glass-200: #d7d3d6;
  --color-volcanic-glass-300: #bab6b9;
  --color-volcanic-glass-400: #a29ca1;
  --color-volcanic-glass-500: #8a8489;
  --color-volcanic-glass-600: #757074;
  --color-volcanic-glass-700: #5d595d;
  --color-volcanic-glass-800: #444144;
  --color-volcanic-glass-900: #2f2d2f;
  --color-volcanic-glass-950: #1c1a1b;
}

SCSS

$volcanic-glass: #615c60;
$volcanic-glass-rgb: 97, 92, 96;
$volcanic-glass-light: mix(#fff, $volcanic-glass, 20%);
$volcanic-glass-dark: mix(#000, $volcanic-glass, 20%);

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