#5F6F6D

CSS

:root {
  --wrapped-in-twilight: #5f6f6d;
  --wrapped-in-twilight-rgb: 95 111 109;
  --wrapped-in-twilight-oklch: oklch(0.528 0.019 187.4);
}

.element {
  color: var(--wrapped-in-twilight);
  background-color: hsl(172 8% 40%);
  border-color: oklch(0.528 0.019 187.4);
}

Tailwind CSS v4

@theme {
  --color-wrapped-in-twilight: #5f6f6d;
  --color-wrapped-in-twilight-50: #eff7f6;
  --color-wrapped-in-twilight-100: #e1eae9;
  --color-wrapped-in-twilight-200: #cbd7d6;
  --color-wrapped-in-twilight-300: #adbbb9;
  --color-wrapped-in-twilight-400: #92a2a0;
  --color-wrapped-in-twilight-500: #788b88;
  --color-wrapped-in-twilight-600: #667573;
  --color-wrapped-in-twilight-700: #515e5c;
  --color-wrapped-in-twilight-800: #3b4543;
  --color-wrapped-in-twilight-900: #292f2e;
  --color-wrapped-in-twilight-950: #161c1b;
}

SCSS

$wrapped-in-twilight: #5f6f6d;
$wrapped-in-twilight-rgb: 95, 111, 109;
$wrapped-in-twilight-light: mix(#fff, $wrapped-in-twilight, 20%);
$wrapped-in-twilight-dark: mix(#000, $wrapped-in-twilight, 20%);

.element {
  color: $wrapped-in-twilight;
  box-shadow: 0 0 0 2px rgba($wrapped-in-twilight, 0.35);
}