The Speed of Light

CSS

:root {
  --the-speed-of-light: #f6f4ef;
  --the-speed-of-light-rgb: 246 244 239;
  --the-speed-of-light-oklch: oklch(0.967 0.007 88.6);
}

.element {
  color: var(--the-speed-of-light);
  background-color: hsl(43 28% 95%);
  border-color: oklch(0.967 0.007 88.6);
}

Tailwind CSS v4

@theme {
  --color-the-speed-of-light: #f6f4ef;
  --color-the-speed-of-light-50: #f6f5f3;
  --color-the-speed-of-light-100: #e9e8e5;
  --color-the-speed-of-light-200: #d5d4d1;
  --color-the-speed-of-light-300: #b9b7b3;
  --color-the-speed-of-light-400: #a09e9a;
  --color-the-speed-of-light-500: #888681;
  --color-the-speed-of-light-600: #73716d;
  --color-the-speed-of-light-700: #5c5b57;
  --color-the-speed-of-light-800: #434240;
  --color-the-speed-of-light-900: #2e2e2c;
  --color-the-speed-of-light-950: #1b1a19;
}

SCSS

$the-speed-of-light: #f6f4ef;
$the-speed-of-light-rgb: 246, 244, 239;
$the-speed-of-light-light: mix(#fff, $the-speed-of-light, 20%);
$the-speed-of-light-dark: mix(#000, $the-speed-of-light, 20%);

.element {
  color: $the-speed-of-light;
  box-shadow: 0 0 0 2px rgba($the-speed-of-light, 0.35);
}