#C03300

CSS

:root {
  --dropped-brick: #c03300;
  --dropped-brick-rgb: 192 51 0;
  --dropped-brick-oklch: oklch(0.535 0.184 35.8);
}

.element {
  color: var(--dropped-brick);
  background-color: hsl(16 100% 38%);
  border-color: oklch(0.535 0.184 35.8);
}

Tailwind CSS v4

@theme {
  --color-dropped-brick: #c03300;
  --color-dropped-brick-50: #ffe4d0;
  --color-dropped-brick-100: #ffd3bc;
  --color-dropped-brick-200: #ffb89b;
  --color-dropped-brick-300: #ff9370;
  --color-dropped-brick-400: #f76f4b;
  --color-dropped-brick-500: #e64717;
  --color-dropped-brick-600: #c23e17;
  --color-dropped-brick-700: #9c3113;
  --color-dropped-brick-800: #752210;
  --color-dropped-brick-900: #52170a;
  --color-dropped-brick-950: #370600;
}

SCSS

$dropped-brick: #c03300;
$dropped-brick-rgb: 192, 51, 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);
}