Knockout Bracket
A tournament bracket you play through: click each match's winner and they slide into the next round, the connector lights up, and the champion takes the trophy.
- Category: Interactive React Animations
- Licence: Charcoal UI Pro
- Built with: React 19, Tailwind CSS 4, Motion
- Dependencies: motion, clsx, tailwind-merge
Examples
Knockout Bracket
API reference
| Prop | Type | Default | Description |
|---|---|---|---|
teams | string[] | — | 4, 8 or 16 in seed order. |
onChampion | (team: string) => void | — | |
height | number | 420 | |
className | string | — |
About Knockout Bracket
Knockout Bracket lets you play through a tournament: click each match's winner and they slide into the next round, the connector lights up behind them, and the champion takes the trophy.
Knockout Bracket is an interactive effect for React 19, styled with Tailwind CSS 4 and animated with Motion. It drops into Next.js, Vite, Remix or Astro through the shadcn CLI as a single file you own.
When to use Knockout Bracket
- Sports and esports brackets.
- Office pools and competitions.
- Product and feature face-offs.
- Voting and polls.
How it works
Connector lengths are computed from the bracket height, so lines meet exactly at any size. Changing an early result clears that team from later rounds, and every pick is a button.
Pointer effects have a keyboard or static equivalent, and nothing that matters depends on hover alone. With prefers-reduced-motion on, it holds still or settles instantly instead of animating.
Customizing Knockout Bracket
Every prop is documented in the API reference above with its type and default. The ones you will reach for first are listed here.
Style it with className like any other element. It only uses your theme's tokens, so it follows light and dark mode without extra work.
- teams (string[]): 4, 8 or 16 in seed order.
- height (number, default 420).
Goes well with Knockout Bracket
These interactive pieces share its tokens and motion language, so they sit together on one page without clashing.
- Hover Reveal List: A React hover reveal list: hovering a row floats its image beside the pointer
- Pixel Grid: A React pixel grid: cells light up under the pointer and fade slowly
- Draggable Cards: React draggable cards: polaroids scattered on a table you can pick up
- Image Accordion: A React image accordion: the hovered panel expands to reveal its caption
- Velocity Marquee: A React velocity marquee: big text that speeds up and flips with scroll
Install Knockout Bracket
npx shadcn@latest add @charcoal/knockout-bracketKnockout Bracket is part of Charcoal UI Pro. One seat unlocks all 393 Pro components, 112 landing-page sections and 100 full templates, for every personal and client project, with updates included. Add the @charcoal registry once with your access token, then the command above copies knockout-bracket.tsx into components/ui and installs clsx, tailwind-merge.
You own the file you install: no runtime package, no lock-in, nothing to keep in sync. Change it however your product needs.
See Charcoal UI Pro pricing · Pro setup
Frequently asked questions
- How do I install Knockout Bracket?
- Knockout Bracket is part of Charcoal UI Pro. Add the @charcoal registry to components.json with your access token, then run npx shadcn@latest add @charcoal/knockout-bracket. It copies knockout-bracket.tsx into components/ui and installs motion, clsx, tailwind-merge.
- Is Knockout Bracket free for commercial use?
- Knockout Bracket needs a Charcoal UI Pro seat, monthly or a one-time lifetime price. A seat covers unlimited personal and commercial projects, including client work, and every future Pro component.
- Does Knockout Bracket work with Next.js?
- Yes. It is a client component for React 19 styled with Tailwind CSS 4, so it works in the Next.js App Router and Pages Router, Vite, Remix and Astro.
- Can an AI coding agent install Knockout Bracket?
- Yes. Connect the Charcoal UI MCP server (https://charcoalui.com/mcp) to Claude Code, Cursor or any MCP client; get_component returns Knockout Bracket's props and get_install_command returns the exact command.