Blue Blue

CSS

:root {
  --blue-blue: #2242c7;
  --blue-blue-rgb: 34 66 199;
  --blue-blue-oklch: oklch(0.452 0.208 266.6);
}

.element {
  color: var(--blue-blue);
  background-color: hsl(228 71% 46%);
  border-color: oklch(0.452 0.208 266.6);
}

Tailwind CSS v4

@theme {
  --color-blue-blue: #2242c7;
  --color-blue-blue-50: #dcf4ff;
  --color-blue-blue-100: #cbe6ff;
  --color-blue-blue-200: #afd0ff;
  --color-blue-blue-300: #8bb0ff;
  --color-blue-blue-400: #6695ff;
  --color-blue-blue-500: #4776ff;
  --color-blue-blue-600: #3c64e3;
  --color-blue-blue-700: #3050b7;
  --color-blue-blue-800: #1d3b89;
  --color-blue-blue-900: #122961;
  --color-blue-blue-950: #061543;
}

SCSS

$blue-blue: #2242c7;
$blue-blue-rgb: 34, 66, 199;
$blue-blue-light: mix(#fff, $blue-blue, 20%);
$blue-blue-dark: mix(#000, $blue-blue, 20%);

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