#737680

CSS

:root {
  --made-in-the-shade: #737680;
  --made-in-the-shade-rgb: 115 118 128;
  --made-in-the-shade-oklch: oklch(0.567 0.016 272.5);
}

.element {
  color: var(--made-in-the-shade);
  background-color: hsl(226 5% 48%);
  border-color: oklch(0.567 0.016 272.5);
}

Tailwind CSS v4

@theme {
  --color-made-in-the-shade: #737680;
  --color-made-in-the-shade-50: #f4f5fa;
  --color-made-in-the-shade-100: #e6e8ed;
  --color-made-in-the-shade-200: #d2d4db;
  --color-made-in-the-shade-300: #b5b7c0;
  --color-made-in-the-shade-400: #9b9ea8;
  --color-made-in-the-shade-500: #828691;
  --color-made-in-the-shade-600: #6e717b;
  --color-made-in-the-shade-700: #585a62;
  --color-made-in-the-shade-800: #404248;
  --color-made-in-the-shade-900: #2c2e32;
  --color-made-in-the-shade-950: #191a1e;
}

SCSS

$made-in-the-shade: #737680;
$made-in-the-shade-rgb: 115, 118, 128;
$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);
}