Blue Linen

CSS

:root {
  --blue-linen: #5a5e6a;
  --blue-linen-rgb: 90 94 106;
  --blue-linen-oklch: oklch(0.483 0.02 271);
}

.element {
  color: var(--blue-linen);
  background-color: hsl(225 8% 38%);
  border-color: oklch(0.483 0.02 271);
}

Tailwind CSS v4

@theme {
  --color-blue-linen: #5a5e6a;
  --color-blue-linen-50: #f3f5fb;
  --color-blue-linen-100: #e5e8ef;
  --color-blue-linen-200: #d1d4dd;
  --color-blue-linen-300: #b4b7c2;
  --color-blue-linen-400: #9a9eab;
  --color-blue-linen-500: #818694;
  --color-blue-linen-600: #6d717d;
  --color-blue-linen-700: #575b64;
  --color-blue-linen-800: #3f4249;
  --color-blue-linen-900: #2c2e33;
  --color-blue-linen-950: #191a1f;
}

SCSS

$blue-linen: #5a5e6a;
$blue-linen-rgb: 90, 94, 106;
$blue-linen-light: mix(#fff, $blue-linen, 20%);
$blue-linen-dark: mix(#000, $blue-linen, 20%);

.element {
  color: $blue-linen;
  box-shadow: 0 0 0 2px rgba($blue-linen, 0.35);
}