Ombre Blue

CSS

:root {
  --ombre-blue: #4a4e5d;
  --ombre-blue-rgb: 74 78 93;
  --ombre-blue-oklch: oklch(0.426 0.025 273.5);
}

.element {
  color: var(--ombre-blue);
  background-color: hsl(227 11% 33%);
  border-color: oklch(0.426 0.025 273.5);
}

Tailwind CSS v4

@theme {
  --color-ombre-blue: #4a4e5d;
  --color-ombre-blue-50: #f3f5fd;
  --color-ombre-blue-100: #e5e7f1;
  --color-ombre-blue-200: #d1d4df;
  --color-ombre-blue-300: #b3b7c5;
  --color-ombre-blue-400: #999eae;
  --color-ombre-blue-500: #808598;
  --color-ombre-blue-600: #6d7180;
  --color-ombre-blue-700: #575a67;
  --color-ombre-blue-800: #3f424b;
  --color-ombre-blue-900: #2b2e34;
  --color-ombre-blue-950: #191a20;
}

SCSS

$ombre-blue: #4a4e5d;
$ombre-blue-rgb: 74, 78, 93;
$ombre-blue-light: mix(#fff, $ombre-blue, 20%);
$ombre-blue-dark: mix(#000, $ombre-blue, 20%);

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