True Blue

CSS

:root {
  --true-blue: #010fcc;
  --true-blue-rgb: 1 15 204;
  --true-blue-oklch: oklch(0.389 0.26 264.3);
}

.element {
  color: var(--true-blue);
  background-color: hsl(236 99% 40%);
  border-color: oklch(0.389 0.26 264.3);
}

Tailwind CSS v4

@theme {
  --color-true-blue: #010fcc;
  --color-true-blue-50: #d3f4ff;
  --color-true-blue-100: #c0e6ff;
  --color-true-blue-200: #a1cfff;
  --color-true-blue-300: #79aeff;
  --color-true-blue-400: #4d90ff;
  --color-true-blue-500: #276cff;
  --color-true-blue-600: #225cfe;
  --color-true-blue-700: #1b4acd;
  --color-true-blue-800: #05379a;
  --color-true-blue-900: #04266d;
  --color-true-blue-950: #00124c;
}

SCSS

$true-blue: #010fcc;
$true-blue-rgb: 1, 15, 204;
$true-blue-light: mix(#fff, $true-blue, 20%);
$true-blue-dark: mix(#000, $true-blue, 20%);

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