#9B6769

CSS

:root {
  --cinnapink: #9b6769;
  --cinnapink-rgb: 155 103 105;
  --cinnapink-oklch: oklch(0.569 0.067 16.9);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(358 21% 51%);
  border-color: oklch(0.569 0.067 16.9);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #9b6769;
  --color-cinnapink-50: #ffeeee;
  --color-cinnapink-100: #fee0df;
  --color-cinnapink-200: #f0c9c9;
  --color-cinnapink-300: #d8aaaa;
  --color-cinnapink-400: #c38f90;
  --color-cinnapink-500: #ae7476;
  --color-cinnapink-600: #936264;
  --color-cinnapink-700: #764e50;
  --color-cinnapink-800: #57393b;
  --color-cinnapink-900: #3d2728;
  --color-cinnapink-950: #261516;
}

SCSS

$cinnapink: #9b6769;
$cinnapink-rgb: 155, 103, 105;
$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);
}