#767677

CSS

:root {
  --lucky-grey: #767677;
  --lucky-grey-rgb: 118 118 119;
  --lucky-grey-oklch: oklch(0.566 0.002 286.4);
}

.element {
  color: var(--lucky-grey);
  background-color: hsl(240 0% 46%);
  border-color: oklch(0.566 0.002 286.4);
}

Tailwind CSS v4

@theme {
  --color-lucky-grey: #767677;
  --color-lucky-grey-50: #f5f5f5;
  --color-lucky-grey-100: #e8e8e8;
  --color-lucky-grey-200: #d4d4d5;
  --color-lucky-grey-300: #b7b7b8;
  --color-lucky-grey-400: #9e9e9f;
  --color-lucky-grey-500: #868687;
  --color-lucky-grey-600: #717172;
  --color-lucky-grey-700: #5b5b5b;
  --color-lucky-grey-800: #424243;
  --color-lucky-grey-900: #2e2e2e;
  --color-lucky-grey-950: #1a1a1b;
}

SCSS

$lucky-grey: #767677;
$lucky-grey-rgb: 118, 118, 119;
$lucky-grey-light: mix(#fff, $lucky-grey, 20%);
$lucky-grey-dark: mix(#000, $lucky-grey, 20%);

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