Dull Red

CSS

:root {
  --dull-red: #bb3f3f;
  --dull-red-rgb: 187 63 63;
  --dull-red-oklch: oklch(0.544 0.16 24.1);
}

.element {
  color: var(--dull-red);
  background-color: hsl(0 50% 49%);
  border-color: oklch(0.544 0.16 24.1);
}

Tailwind CSS v4

@theme {
  --color-dull-red: #bb3f3f;
  --color-dull-red-50: #ffe4dd;
  --color-dull-red-100: #ffd4cc;
  --color-dull-red-200: #ffbab0;
  --color-dull-red-300: #ff968c;
  --color-dull-red-400: #ee746f;
  --color-dull-red-500: #dc504f;
  --color-dull-red-600: #ba4543;
  --color-dull-red-700: #953736;
  --color-dull-red-800: #6f2628;
  --color-dull-red-900: #4f1a1b;
  --color-dull-red-950: #34090b;
}

SCSS

$dull-red: #bb3f3f;
$dull-red-rgb: 187, 63, 63;
$dull-red-light: mix(#fff, $dull-red, 20%);
$dull-red-dark: mix(#000, $dull-red, 20%);

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