#6B7584

CSS

:root {
  --made-in-the-shade: #6b7584;
  --made-in-the-shade-rgb: 107 117 132;
  --made-in-the-shade-oklch: oklch(0.559 0.026 258.4);
}

.element {
  color: var(--made-in-the-shade);
  background-color: hsl(216 10% 47%);
  border-color: oklch(0.559 0.026 258.4);
}

Tailwind CSS v4

@theme {
  --color-made-in-the-shade: #6b7584;
  --color-made-in-the-shade-50: #f1f5fd;
  --color-made-in-the-shade-100: #e3e8f1;
  --color-made-in-the-shade-200: #ced5e0;
  --color-made-in-the-shade-300: #b0b8c5;
  --color-made-in-the-shade-400: #959fae;
  --color-made-in-the-shade-500: #7c8798;
  --color-made-in-the-shade-600: #697280;
  --color-made-in-the-shade-700: #545b67;
  --color-made-in-the-shade-800: #3d434c;
  --color-made-in-the-shade-900: #2a2e34;
  --color-made-in-the-shade-950: #171b20;
}

SCSS

$made-in-the-shade: #6b7584;
$made-in-the-shade-rgb: 107, 117, 132;
$made-in-the-shade-light: mix(#fff, $made-in-the-shade, 20%);
$made-in-the-shade-dark: mix(#000, $made-in-the-shade, 20%);

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