#A76279

CSS

:root {
  --cinnapink: #a76279;
  --cinnapink-rgb: 167 98 121;
  --cinnapink-oklch: oklch(0.58 0.093 359);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(340 28% 52%);
  border-color: oklch(0.58 0.093 359);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a76279;
  --color-cinnapink-50: #ffebf3;
  --color-cinnapink-100: #ffdce6;
  --color-cinnapink-200: #f7c4d2;
  --color-cinnapink-300: #e1a4b4;
  --color-cinnapink-400: #cc879d;
  --color-cinnapink-500: #b86b85;
  --color-cinnapink-600: #9b5b70;
  --color-cinnapink-700: #7d485a;
  --color-cinnapink-800: #5c3443;
  --color-cinnapink-900: #41242e;
  --color-cinnapink-950: #29121b;
}

SCSS

$cinnapink: #a76279;
$cinnapink-rgb: 167, 98, 121;
$cinnapink-light: mix(#fff, $cinnapink, 20%);
$cinnapink-dark: mix(#000, $cinnapink, 20%);

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