#B9B9B9

CSS

:root {
  --dust-to-dust: #b9b9b9;
  --dust-to-dust-rgb: 185 185 185;
  --dust-to-dust-oklch: oklch(0.786 0 0);
}

.element {
  color: var(--dust-to-dust);
  background-color: hsl(0 0% 73%);
  border-color: oklch(0.786 0 0);
}

Tailwind CSS v4

@theme {
  --color-dust-to-dust: #b9b9b9;
  --color-dust-to-dust-50: #f5f5f5;
  --color-dust-to-dust-100: #e8e8e8;
  --color-dust-to-dust-200: #d4d4d4;
  --color-dust-to-dust-300: #b7b7b7;
  --color-dust-to-dust-400: #9e9e9e;
  --color-dust-to-dust-500: #868686;
  --color-dust-to-dust-600: #717171;
  --color-dust-to-dust-700: #5b5b5b;
  --color-dust-to-dust-800: #424242;
  --color-dust-to-dust-900: #2e2e2e;
  --color-dust-to-dust-950: #1b1b1b;
}

SCSS

$dust-to-dust: #b9b9b9;
$dust-to-dust-rgb: 185, 185, 185;
$dust-to-dust-light: mix(#fff, $dust-to-dust, 20%);
$dust-to-dust-dark: mix(#000, $dust-to-dust, 20%);

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