Major Tom

CSS

:root {
  --major-tom: #001177;
  --major-tom-rgb: 0 17 119;
  --major-tom-oklch: oklch(0.275 0.167 264.1);
}

.element {
  color: var(--major-tom);
  background-color: hsl(231 100% 23%);
  border-color: oklch(0.275 0.167 264.1);
}

Tailwind CSS v4

@theme {
  --color-major-tom: #001177;
  --color-major-tom-50: #dff5ff;
  --color-major-tom-100: #cee7ff;
  --color-major-tom-200: #b3d3ff;
  --color-major-tom-300: #8fb4ff;
  --color-major-tom-400: #6b9aff;
  --color-major-tom-500: #4c7ef3;
  --color-major-tom-600: #416bcd;
  --color-major-tom-700: #3356a5;
  --color-major-tom-800: #213f7b;
  --color-major-tom-900: #152c57;
  --color-major-tom-950: #07183b;
}

SCSS

$major-tom: #001177;
$major-tom-rgb: 0, 17, 119;
$major-tom-light: mix(#fff, $major-tom, 20%);
$major-tom-dark: mix(#000, $major-tom, 20%);

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