#D87263

CSS

:root {
  --phoenix-red: #d87263;
  --phoenix-red-rgb: 216 114 99;
  --phoenix-red-oklch: oklch(0.665 0.131 29.7);
}

.element {
  color: var(--phoenix-red);
  background-color: hsl(8 60% 62%);
  border-color: oklch(0.665 0.131 29.7);
}

Tailwind CSS v4

@theme {
  --color-phoenix-red: #d87263;
  --color-phoenix-red-50: #ffe8de;
  --color-phoenix-red-100: #ffd9cd;
  --color-phoenix-red-200: #ffc0b2;
  --color-phoenix-red-300: #f39e8e;
  --color-phoenix-red-400: #e17f70;
  --color-phoenix-red-500: #ce5f50;
  --color-phoenix-red-600: #ae5145;
  --color-phoenix-red-700: #8c4136;
  --color-phoenix-red-800: #682e28;
  --color-phoenix-red-900: #491f1b;
  --color-phoenix-red-950: #300e0b;
}

SCSS

$phoenix-red: #d87263;
$phoenix-red-rgb: 216, 114, 99;
$phoenix-red-light: mix(#fff, $phoenix-red, 20%);
$phoenix-red-dark: mix(#000, $phoenix-red, 20%);

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