#5B6F76

CSS

:root {
  --wrapped-in-twilight: #5b6f76;
  --wrapped-in-twilight-rgb: 91 111 118;
  --wrapped-in-twilight-oklch: oklch(0.528 0.026 221.1);
}

.element {
  color: var(--wrapped-in-twilight);
  background-color: hsl(196 13% 41%);
  border-color: oklch(0.528 0.026 221.1);
}

Tailwind CSS v4

@theme {
  --color-wrapped-in-twilight: #5b6f76;
  --color-wrapped-in-twilight-50: #eef7fb;
  --color-wrapped-in-twilight-100: #dfeaee;
  --color-wrapped-in-twilight-200: #c9d7dc;
  --color-wrapped-in-twilight-300: #aabbc1;
  --color-wrapped-in-twilight-400: #8ea2a9;
  --color-wrapped-in-twilight-500: #748b93;
  --color-wrapped-in-twilight-600: #62757c;
  --color-wrapped-in-twilight-700: #4e5e63;
  --color-wrapped-in-twilight-800: #394549;
  --color-wrapped-in-twilight-900: #272f32;
  --color-wrapped-in-twilight-950: #151c1e;
}

SCSS

$wrapped-in-twilight: #5b6f76;
$wrapped-in-twilight-rgb: 91, 111, 118;
$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);
}