#5A7075

CSS

:root {
  --wrapped-in-twilight: #5a7075;
  --wrapped-in-twilight-rgb: 90 112 117;
  --wrapped-in-twilight-oklch: oklch(0.529 0.027 213.1);
}

.element {
  color: var(--wrapped-in-twilight);
  background-color: hsl(191 13% 41%);
  border-color: oklch(0.529 0.027 213.1);
}

Tailwind CSS v4

@theme {
  --color-wrapped-in-twilight: #5a7075;
  --color-wrapped-in-twilight-50: #edf7fa;
  --color-wrapped-in-twilight-100: #deeaee;
  --color-wrapped-in-twilight-200: #c8d7db;
  --color-wrapped-in-twilight-300: #a9bbc0;
  --color-wrapped-in-twilight-400: #8da3a8;
  --color-wrapped-in-twilight-500: #728b91;
  --color-wrapped-in-twilight-600: #61767b;
  --color-wrapped-in-twilight-700: #4d5e62;
  --color-wrapped-in-twilight-800: #384548;
  --color-wrapped-in-twilight-900: #263032;
  --color-wrapped-in-twilight-950: #151c1e;
}

SCSS

$wrapped-in-twilight: #5a7075;
$wrapped-in-twilight-rgb: 90, 112, 117;
$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);
}