#5D7070

CSS

:root {
  --wrapped-in-twilight: #5d7070;
  --wrapped-in-twilight-rgb: 93 112 112;
  --wrapped-in-twilight-oklch: oklch(0.53 0.023 196.5);
}

.element {
  color: var(--wrapped-in-twilight);
  background-color: hsl(180 9% 40%);
  border-color: oklch(0.53 0.023 196.5);
}

Tailwind CSS v4

@theme {
  --color-wrapped-in-twilight: #5d7070;
  --color-wrapped-in-twilight-50: #eef7f7;
  --color-wrapped-in-twilight-100: #e0eaeb;
  --color-wrapped-in-twilight-200: #cad7d8;
  --color-wrapped-in-twilight-300: #abbbbc;
  --color-wrapped-in-twilight-400: #90a3a3;
  --color-wrapped-in-twilight-500: #758b8b;
  --color-wrapped-in-twilight-600: #647676;
  --color-wrapped-in-twilight-700: #4f5e5e;
  --color-wrapped-in-twilight-800: #3a4545;
  --color-wrapped-in-twilight-900: #27302f;
  --color-wrapped-in-twilight-950: #161c1c;
}

SCSS

$wrapped-in-twilight: #5d7070;
$wrapped-in-twilight-rgb: 93, 112, 112;
$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);
}