#B43200

CSS

:root {
  --dropped-brick: #b43200;
  --dropped-brick-rgb: 180 50 0;
  --dropped-brick-oklch: oklch(0.512 0.173 36.5);
}

.element {
  color: var(--dropped-brick);
  background-color: hsl(17 100% 35%);
  border-color: oklch(0.512 0.173 36.5);
}

Tailwind CSS v4

@theme {
  --color-dropped-brick: #b43200;
  --color-dropped-brick-50: #ffe5d1;
  --color-dropped-brick-100: #ffd5be;
  --color-dropped-brick-200: #ffba9d;
  --color-dropped-brick-300: #ff9674;
  --color-dropped-brick-400: #f27350;
  --color-dropped-brick-500: #e14e21;
  --color-dropped-brick-600: #be431f;
  --color-dropped-brick-700: #993618;
  --color-dropped-brick-800: #722513;
  --color-dropped-brick-900: #51190c;
  --color-dropped-brick-950: #350801;
}

SCSS

$dropped-brick: #b43200;
$dropped-brick-rgb: 180, 50, 0;
$dropped-brick-light: mix(#fff, $dropped-brick, 20%);
$dropped-brick-dark: mix(#000, $dropped-brick, 20%);

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