Color Picker — HEX to All Formats
Enter a hex color and see all format conversions: HEX, RGB, HSL, RGBA, and CSS variable.
How it works
- 1Configure your options above
- 2Click "Generate" — processing happens in your browser
- 3Copy or download the result
What to do next
About Color Picker
Color Picker is a free, in-browser developer tool. Enter a hex color and see all format conversions: HEX, RGB, HSL, RGBA, and CSS variable. The page exposes a small surface — input, controls, output — so a first-time visitor can complete the job without reading documentation.
The heaviest users of Color Picker tend to be frontend developers prepping fixtures, site reliability engineers triaging logs and engineers debugging API payloads. Each group brings slightly different expectations to the tool, but the same single-page architecture serves every one of them with the same response time.
Color Picker is a static page plus a client-side engine. The browser does the work; there is no separate backend in the loop for the actual processing. That architecture is why the tool starts immediately, why it does not depend on the load on a remote service, and why running multiple jobs in a row does not slow it down.
Architecturally, Color Picker is a single-page client. The processing layer is standard browser APIs; the UI is a thin React shell on top. Inputs flow through the engine and the output is returned to the browser as a Blob you can save or copy. The 0 MB cap is the only hard limit and it exists to keep memory usage stable on every device.
Color Picker is shaped for the gap between "I'll do it by hand" and "I'll script it." When the job is small enough that automating it would take longer than doing it, but annoying enough to want a focused tool — that is the situation this page is built for.
Color Picker sits in a small group of related tools. Useful neighbours include HEX to RGB Converter, HEX to HSL Converter, Color Palette Generator, and Color Contrast Checker. They are designed to compose: the output of one is a sensible input to the next, so a multi-step task is usually a sequence of single-click operations.
The output handed back by Color Picker is the output file. If you would prefer to keep the result in the browser instead of downloading it, you can copy it from the result panel and paste it directly into another tab — useful when the next tool in your workflow expects pasted text rather than a file.
The only practical limit is the 0 MB per-file ceiling, which keeps the tool responsive across a wide range of devices. Run the tool ten times in a row, run it ten thousand times — it behaves the same way and produces the same quality of result.
The transformation in Color Picker is deterministic — the same input plus the same options produces the same result every run. That predictability matters when the result has to match an upstream specification or be reproducible later.
Some background on the design choices behind Color Picker: every option you see on the page is there because a real workflow needs it, and every option that is not shown has been deliberately omitted to keep the common case fast. The bias is toward minimal-but-complete.
If you want to get the most out of Color Picker, three small habits help. Drag-and-drop is faster than the file picker once you get used to it. The keyboard shortcut for downloading the result is whatever your browser uses for "save link as," because the result is a normal download. And if you are working on a sensitive file, processing in an Incognito or Private window is a good extra layer — it leaves no trace in browser history when the tab closes.
When something goes wrong, the cause is usually one of three things: a malformed input, a browser that is out of memory, or a corporate proxy that is interfering with the page's static assets. The first two are easy to diagnose; the third typically requires asking your IT team to allow standard browser APIs to load.
As a single-page tool, Color Picker stays focused on one developer utility step. Multi-step workflows are composed by chaining adjacent tools — each tool produces a standard file the next one can read directly, so a longer pipeline is just a sequence of short tab-and-tab visits.
Color Picker is one of many single-purpose tools in the catalog. Each is built around the same single-page model. Use this one, close the tab, and come back the next time you need the same job done. None of the tools require prior knowledge of the others — each page is self-contained.
How it works
- 1Open the Color Picker workspace above. The interface is a single page, so there is nothing to navigate.
- 2Select the developer file you want to process — drag-and-drop and the file picker both work.
- 3Tweak the controls if the defaults are not quite right for your input. The options are kept short and labelled in plain language.
- 4Hit the run button. standard browser APIs does the work in your browser tab.
- 5Grab the output as soon as the run completes. You can also copy the result instead of downloading if the next tool in your workflow accepts pasted input.
- 6Run additional jobs as needed. The same controls and defaults apply on every run.
Common use cases
- Inspect a payload during local development without writing a script using Color Picker.
- Decode a token to confirm its claims during a debugging session.
- Generate a quick fixture without leaving the browser.
- Format a noisy log line into something a teammate can read.
- Pretty-print a minified blob during incident triage.
- Hash a string for a quick reproducibility check.
- Compare two API responses to spot a regression.
- Inspect a regex against a test string before committing it.
FAQ
What color formats are shown?
HEX, RGB, HSL, RGBA, and a CSS custom property declaration.
Can I enter RGB or HSL?
This tool takes hex input. Use the hex-to-rgb or hex-to-hsl converters for other directions.
Does it support alpha/transparency?
The RGBA output is shown with alpha 1 (fully opaque). Manually adjust the alpha value as needed.
Can I use shorthand hex?
Yes — 3-character hex codes like #f00 are automatically expanded to 6 characters.
What about CSS color names?
Enter the hex equivalent. Use the color name finder tool to look up names.
Is my data safe?
All processing happens in your browser.
Can I use Color Picker with formats other than the defaults?
The accepted formats are listed in the upload area on the tool itself. If your input is in a format that is not directly supported, convert it first using one of Favtoo's converter tools — every Favtoo converter outputs a file that is a clean input to the next tool in the chain.
Do I need to install anything to use Color Picker?
No installation is needed. Color Picker runs as a normal web page, with no browser extension, no native helper, and no separate desktop client to download. That is partly a privacy choice — extensions can request broad permissions, while a regular page is sandboxed by default — and partly a convenience one: you can use Color Picker on any computer you have temporary access to without leaving anything installed on it.
What is the maximum file size for Color Picker?
Inputs are capped at 0 MB per file, which keeps memory usage stable across phones, tablets and older laptops. You can run Color Picker as often as you need; every run produces a full-quality result.
Does Color Picker have an API?
Color Picker is a browser-only tool by design and does not expose a hosted API. The reason is the same as the privacy story: there is no Favtoo backend doing the work, so there is no service to call. If you need to script the same transformation, the underlying engine (standard browser APIs) is open-source and can be used directly from your own code.
Can I use Color Picker on iOS or Android?
Color Picker runs in any modern mobile browser — Safari, Chrome, Firefox and the in-app browsers in most messaging apps all support the underlying APIs. Performance depends on the device: a recent phone handles typical inputs nearly as fast as a laptop, while older devices may take a few seconds longer near the 0 MB ceiling. The interface lays out cleanly on small screens, so you do not need to pinch-zoom to see the controls.
Can I use Color Picker for commercial work?
Color Picker can be used for personal and commercial work alike — there is no separate "business" licence to purchase. The output you generate is yours to use however you want, including in client deliverables, internal documents, or commercial products. Favtoo's only ask is fair, individual use; the tool is not designed to be embedded as a backend service or wrapped behind an API for resale.
Can I self-host Color Picker for my team?
Color Picker is a static page running an open-source engine in your browser, so a typical corporate firewall does not get in the way as long as it allows JavaScript to load from Favtoo. For teams that need to host it themselves on an internal network, the underlying engine (standard browser APIs) is open-source and can be packaged into a private build with the same behaviour. Reach out via the Contact page if that is something you are exploring.