#A76465

CSS

:root {
  --cinnapink: #a76465;
  --cinnapink-rgb: 167 100 101;
  --cinnapink-oklch: oklch(0.578 0.087 19.1);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(359 28% 52%);
  border-color: oklch(0.578 0.087 19.1);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #a76465;
  --color-cinnapink-50: #ffecea;
  --color-cinnapink-100: #ffdddb;
  --color-cinnapink-200: #f8c6c4;
  --color-cinnapink-300: #e1a6a4;
  --color-cinnapink-400: #cd8a8a;
  --color-cinnapink-500: #b96e6f;
  --color-cinnapink-600: #9c5d5e;
  --color-cinnapink-700: #7d4a4b;
  --color-cinnapink-800: #5d3637;
  --color-cinnapink-900: #412526;
  --color-cinnapink-950: #291314;
}

SCSS

$cinnapink: #a76465;
$cinnapink-rgb: 167, 100, 101;
$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);
}