Sceptre Blue

CSS

:root {
  --sceptre-blue: #353542;
  --sceptre-blue-rgb: 53 53 66;
  --sceptre-blue-oklch: oklch(0.334 0.023 285.1);
}

.element {
  color: var(--sceptre-blue);
  background-color: hsl(240 11% 23%);
  border-color: oklch(0.334 0.023 285.1);
}

Tailwind CSS v4

@theme {
  --color-sceptre-blue: #353542;
  --color-sceptre-blue-50: #f4f4fb;
  --color-sceptre-blue-100: #e7e7ef;
  --color-sceptre-blue-200: #d3d3de;
  --color-sceptre-blue-300: #b6b6c3;
  --color-sceptre-blue-400: #9d9dac;
  --color-sceptre-blue-500: #848495;
  --color-sceptre-blue-600: #70707e;
  --color-sceptre-blue-700: #595a65;
  --color-sceptre-blue-800: #41414a;
  --color-sceptre-blue-900: #2d2d33;
  --color-sceptre-blue-950: #1a1a1f;
}

SCSS

$sceptre-blue: #353542;
$sceptre-blue-rgb: 53, 53, 66;
$sceptre-blue-light: mix(#fff, $sceptre-blue, 20%);
$sceptre-blue-dark: mix(#000, $sceptre-blue, 20%);

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