Blasphemous Blue

CSS

:root {
  --blasphemous-blue: #3356aa;
  --blasphemous-blue-rgb: 51 86 170;
  --blasphemous-blue-oklch: oklch(0.474 0.141 264.6);
}

.element {
  color: var(--blasphemous-blue);
  background-color: hsl(222 54% 43%);
  border-color: oklch(0.474 0.141 264.6);
}

Tailwind CSS v4

@theme {
  --color-blasphemous-blue: #3356aa;
  --color-blasphemous-blue-50: #e3f5ff;
  --color-blasphemous-blue-100: #d2e8ff;
  --color-blasphemous-blue-200: #b9d3ff;
  --color-blasphemous-blue-300: #96b5ff;
  --color-blasphemous-blue-400: #759cf1;
  --color-blasphemous-blue-500: #5781e3;
  --color-blasphemous-blue-600: #4a6dbf;
  --color-blasphemous-blue-700: #3b589a;
  --color-blasphemous-blue-800: #274073;
  --color-blasphemous-blue-900: #1a2c51;
  --color-blasphemous-blue-950: #0b1936;
}

SCSS

$blasphemous-blue: #3356aa;
$blasphemous-blue-rgb: 51, 86, 170;
$blasphemous-blue-light: mix(#fff, $blasphemous-blue, 20%);
$blasphemous-blue-dark: mix(#000, $blasphemous-blue, 20%);

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