#5F706C

CSS

:root {
  --wrapped-in-twilight: #5f706c;
  --wrapped-in-twilight-rgb: 95 112 108;
  --wrapped-in-twilight-oklch: oklch(0.53 0.021 179.7);
}

.element {
  color: var(--wrapped-in-twilight);
  background-color: hsl(166 8% 41%);
  border-color: oklch(0.53 0.021 179.7);
}

Tailwind CSS v4

@theme {
  --color-wrapped-in-twilight: #5f706c;
  --color-wrapped-in-twilight-50: #eff7f5;
  --color-wrapped-in-twilight-100: #e1eae8;
  --color-wrapped-in-twilight-200: #cbd7d5;
  --color-wrapped-in-twilight-300: #acbbb8;
  --color-wrapped-in-twilight-400: #92a39f;
  --color-wrapped-in-twilight-500: #788b86;
  --color-wrapped-in-twilight-600: #657672;
  --color-wrapped-in-twilight-700: #515e5b;
  --color-wrapped-in-twilight-800: #3b4542;
  --color-wrapped-in-twilight-900: #28302e;
  --color-wrapped-in-twilight-950: #161c1a;
}

SCSS

$wrapped-in-twilight: #5f706c;
$wrapped-in-twilight-rgb: 95, 112, 108;
$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);
}