#864845

CSS

:root {
  --think-brick: #864845;
  --think-brick-rgb: 134 72 69;
  --think-brick-oklch: oklch(0.476 0.085 23.7);
}

.element {
  color: var(--think-brick);
  background-color: hsl(3 32% 40%);
  border-color: oklch(0.476 0.085 23.7);
}

Tailwind CSS v4

@theme {
  --color-think-brick: #864845;
  --color-think-brick-50: #ffece9;
  --color-think-brick-100: #ffded9;
  --color-think-brick-200: #f7c7c2;
  --color-think-brick-300: #e0a7a1;
  --color-think-brick-400: #cc8b86;
  --color-think-brick-500: #b86f6b;
  --color-think-brick-600: #9b5e5b;
  --color-think-brick-700: #7d4b48;
  --color-think-brick-800: #5c3635;
  --color-think-brick-900: #412524;
  --color-think-brick-950: #291313;
}

SCSS

$think-brick: #864845;
$think-brick-rgb: 134, 72, 69;
$think-brick-light: mix(#fff, $think-brick, 20%);
$think-brick-dark: mix(#000, $think-brick, 20%);

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