#A3555B

CSS

:root {
  --hot-flamingo: #a3555b;
  --hot-flamingo-rgb: 163 85 91;
  --hot-flamingo-oklch: oklch(0.544 0.103 16.2);
}

.element {
  color: var(--hot-flamingo);
  background-color: hsl(355 31% 49%);
  border-color: oklch(0.544 0.103 16.2);
}

Tailwind CSS v4

@theme {
  --color-hot-flamingo: #a3555b;
  --color-hot-flamingo-50: #ffeaea;
  --color-hot-flamingo-100: #ffdbdb;
  --color-hot-flamingo-200: #fdc3c4;
  --color-hot-flamingo-300: #e7a2a3;
  --color-hot-flamingo-400: #d48589;
  --color-hot-flamingo-500: #c0686e;
  --color-hot-flamingo-600: #a3585e;
  --color-hot-flamingo-700: #83464b;
  --color-hot-flamingo-800: #613337;
  --color-hot-flamingo-900: #442226;
  --color-hot-flamingo-950: #2c1114;
}

SCSS

$hot-flamingo: #a3555b;
$hot-flamingo-rgb: 163, 85, 91;
$hot-flamingo-light: mix(#fff, $hot-flamingo, 20%);
$hot-flamingo-dark: mix(#000, $hot-flamingo, 20%);

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