#BD3600

CSS

:root {
  --dropped-brick: #bd3600;
  --dropped-brick-rgb: 189 54 0;
  --dropped-brick-oklch: oklch(0.532 0.179 36.8);
}

.element {
  color: var(--dropped-brick);
  background-color: hsl(17 100% 37%);
  border-color: oklch(0.532 0.179 36.8);
}

Tailwind CSS v4

@theme {
  --color-dropped-brick: #bd3600;
  --color-dropped-brick-50: #ffe4d0;
  --color-dropped-brick-100: #ffd4bc;
  --color-dropped-brick-200: #ffb99b;
  --color-dropped-brick-300: #ff9571;
  --color-dropped-brick-400: #f4714c;
  --color-dropped-brick-500: #e34b18;
  --color-dropped-brick-600: #c04118;
  --color-dropped-brick-700: #9a3414;
  --color-dropped-brick-800: #732410;
  --color-dropped-brick-900: #52180a;
  --color-dropped-brick-950: #360700;
}

SCSS

$dropped-brick: #bd3600;
$dropped-brick-rgb: 189, 54, 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);
}