#99676A

CSS

:root {
  --cinnapink: #99676a;
  --cinnapink-rgb: 153 103 106;
  --cinnapink-oklch: oklch(0.567 0.065 15.4);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(356 20% 50%);
  border-color: oklch(0.567 0.065 15.4);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #99676a;
  --color-cinnapink-50: #ffeeee;
  --color-cinnapink-100: #fde0e0;
  --color-cinnapink-200: #efcaca;
  --color-cinnapink-300: #d7abab;
  --color-cinnapink-400: #c28f92;
  --color-cinnapink-500: #ad7578;
  --color-cinnapink-600: #926366;
  --color-cinnapink-700: #754f51;
  --color-cinnapink-800: #57393c;
  --color-cinnapink-900: #3c2729;
  --color-cinnapink-950: #261517;
}

SCSS

$cinnapink: #99676a;
$cinnapink-rgb: 153, 103, 106;
$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);
}