#EC003E

CSS

:root {
  --red-ribbon: #ec003e;
  --red-ribbon-rgb: 236 0 62;
  --red-ribbon-oklch: oklch(0.597 0.24 20);
}

.element {
  color: var(--red-ribbon);
  background-color: hsl(344 100% 46%);
  border-color: oklch(0.597 0.24 20);
}

Tailwind CSS v4

@theme {
  --color-red-ribbon: #ec003e;
  --color-red-ribbon-50: #ffdad6;
  --color-red-ribbon-100: #ffc8c4;
  --color-red-ribbon-200: #ffa8a6;
  --color-red-ribbon-300: #ff7d7e;
  --color-red-ribbon-400: #ff4d60;
  --color-red-ribbon-500: #fe003d;
  --color-red-ribbon-600: #d60034;
  --color-red-ribbon-700: #ad0029;
  --color-red-ribbon-800: #810020;
  --color-red-ribbon-900: #5b0015;
  --color-red-ribbon-950: #3e0007;
}

SCSS

$red-ribbon: #ec003e;
$red-ribbon-rgb: 236, 0, 62;
$red-ribbon-light: mix(#fff, $red-ribbon, 20%);
$red-ribbon-dark: mix(#000, $red-ribbon, 20%);

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