#DF2646

CSS

:root {
  --crossing-the-line: #df2646;
  --crossing-the-line-rgb: 223 38 70;
  --crossing-the-line-oklch: oklch(0.587 0.215 18.9);
}

.element {
  color: var(--crossing-the-line);
  background-color: hsl(350 74% 51%);
  border-color: oklch(0.587 0.215 18.9);
}

Tailwind CSS v4

@theme {
  --color-crossing-the-line: #df2646;
  --color-crossing-the-line-50: #ffdddb;
  --color-crossing-the-line-100: #ffcbc9;
  --color-crossing-the-line-200: #ffadac;
  --color-crossing-the-line-300: #ff8487;
  --color-crossing-the-line-400: #ff5a6a;
  --color-crossing-the-line-500: #f41e49;
  --color-crossing-the-line-600: #ce1f3f;
  --color-crossing-the-line-700: #a61a32;
  --color-crossing-the-line-800: #7c0f26;
  --color-crossing-the-line-900: #580a19;
  --color-crossing-the-line-950: #3b000a;
}

SCSS

$crossing-the-line: #df2646;
$crossing-the-line-rgb: 223, 38, 70;
$crossing-the-line-light: mix(#fff, $crossing-the-line, 20%);
$crossing-the-line-dark: mix(#000, $crossing-the-line, 20%);

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