#9A6A6C

CSS

:root {
  --cinnapink: #9a6a6c;
  --cinnapink-rgb: 154 106 108;
  --cinnapink-oklch: oklch(0.575 0.062 16.4);
}

.element {
  color: var(--cinnapink);
  background-color: hsl(358 19% 51%);
  border-color: oklch(0.575 0.062 16.4);
}

Tailwind CSS v4

@theme {
  --color-cinnapink: #9a6a6c;
  --color-cinnapink-50: #ffefee;
  --color-cinnapink-100: #fce0e0;
  --color-cinnapink-200: #eecaca;
  --color-cinnapink-300: #d5abab;
  --color-cinnapink-400: #c09092;
  --color-cinnapink-500: #ab7678;
  --color-cinnapink-600: #916466;
  --color-cinnapink-700: #745051;
  --color-cinnapink-800: #563a3c;
  --color-cinnapink-900: #3c2729;
  --color-cinnapink-950: #261617;
}

SCSS

$cinnapink: #9a6a6c;
$cinnapink-rgb: 154, 106, 108;
$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);
}