Color Mixer — Blend Two Colors
Mix two hex colors together by averaging their RGB values to produce a blended color.
How it works
- 1Type or paste in the two hex colors (comma-separated) field
- 2Conversion happens instantly in your browser
- 3Copy the result with one click
What to do next
About Color Mixer
Color Mixer runs the developer utility job locally inside your browser. Mix two hex colors together by averaging their RGB values to produce a blended color. The work happens on your machine, the result is generated on your machine, and the page exposes the controls you need to drive it without burying them in menus.
Color Mixer works well as a bookmarked utility you reach for when you need it. The first visit shows you what the tool does; the second is when you realise it is a low-friction option for the task and worth keeping in your tab list.
Color Mixer runs the entire transformation inside your browser. The file is read by JavaScript running in the page, processed in-memory by standard browser APIs, and written back as a download. The browser is the runtime; the page is the interface. You can confirm what the tool does by opening the developer-tools Network tab during a run — the only requests are for the page's own static assets.
Architecturally, Color Mixer 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.
A practical note on limits: Color Mixer accepts inputs up to 0 MB per run, and the tool processes one input at a time to keep memory usage predictable. If you ever bump into the ceiling, the cause is the size of the input.
If you fit any of these descriptions, Color Mixer should slot cleanly into your workflow: QA engineers writing repro cases; frontend developers prepping fixtures; engineers debugging API payloads. The tool keeps the controls focused on what matters for each of these use cases.
The download is delivered as a clearly named file the moment processing completes — no email link, no "your result will be ready in 5 minutes" queue, no expiry timer. The file is generated in your browser and saved by your browser's normal download flow.
Workflow tip: Color Mixer pairs well with Color Gradient Generator and Color Palette Generator. Other adjacent tools you may find useful are Complementary Color Finder and Color Picker. Because every tool is a separate page, you can mix and match the steps that match your job. Bookmark the ones you reach for the most.
Some notes on the design of Color Mixer. The page is intentionally narrow: one input, the controls relevant to the task, and one output. Adding unrelated features would make the common case slower for the majority of users, so the surface is held to what people actually use.
Some context on why Color Mixer exists in this form: modern File APIs, high-performance JavaScript engines, and well-maintained open-source libraries now make it possible to perform developer utility work entirely in the browser. Color Mixer is built on top of that capability, which is why a single page can host the full pipeline.
If you also use a command-line tool for color mixer, Color Mixer is a convenient alternative for the times you are on a different machine or helping someone who is not comfortable in a terminal. The output is a standard file in the format documented above.
Pro tip: Color Mixer works just as well in a private/incognito window as in a normal one, which is occasionally useful when you want zero browser-history footprint of the job. Another tip: if the tool ever feels slow, it is almost always because the browser tab is competing for CPU with another tab — pausing or closing the heavy ones gives the engine room to work.
If Color Mixer appears to hang, the engine is almost certainly still working — large inputs simply take longer to process inside a browser than they would on a server with multi-core scheduling. For inputs near the 0 MB cap, give it up to a minute on a typical laptop before assuming something is stuck.
Color Mixer 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
- 1Reach the Color Mixer page in your browser to begin.
- 2Add your developer input by dropping it onto the page or browsing for it.
- 3Adjust the options to match what you need. Sensible defaults cover the most common case, so you can usually skip this step.
- 4Trigger processing. standard browser APIs reads your input, applies the transformation, and writes the result back into the page.
- 5Save the output when it is ready.
- 6Run additional jobs as needed. The same controls and defaults apply on every run.
Common use cases
- Encode binary content for transport in a JSON body using Color Mixer.
- Decode a token to confirm its claims during a debugging session.
- Inspect a regex against a test string before committing it.
- Hash a string for a quick reproducibility check.
- Inspect a payload during local development without writing a script.
- Generate a quick fixture without leaving the browser.
- Convert between data formats while wiring up an integration.
- Compare two API responses to spot a regression.
- Validate a config blob before pushing to staging.
- Generate boilerplate from a single specification line.
FAQ
How are colors mixed?
The RGB channels of both colors are averaged: (R1+R2)/2, (G1+G2)/2, (B1+B2)/2.
Is this like paint mixing?
Approximately — it simulates additive/subtractive mixing in RGB space, which is close but not identical to paint.
Can I mix more than two colors?
Mix two at a time. Use the result as input for additional mixing.
Can I adjust the ratio?
This tool uses a 50/50 blend. For weighted mixing, use the gradient generator and pick an intermediate step.
What format is expected?
Enter two hex colors separated by a comma (e.g. #3b82f6, #ef4444).
Is my data safe?
All processing happens in your browser.
Can Color Mixer run inside a corporate firewall?
Color Mixer 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.
Is Color Mixer licensed for business use?
Color Mixer 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.
Does Color Mixer need an internet connection to run?
Once the page is loaded, Color Mixer can complete jobs without an active internet connection — the engine is bundled with the page, so there is no per-job network call. The initial page load does require a connection (to fetch the static assets), but after that you can disconnect entirely and the tool will still work. This is a side-effect of the local-first architecture, not a deliberate "offline mode" feature.
Can I use Color Mixer on documents that contain personal data?
Your file is processed inside your browser by standard browser APIs. The engine reads the file's bytes from your tab's memory, computes the result, and writes the result back into the tab. You can confirm what the page does by opening developer tools and watching the Network tab during a run — the requests you see are for the tool's static assets only.
Which file formats does Color Mixer accept?
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.
Is Color Mixer keyboard accessible?
Color Mixer uses native HTML controls wherever possible, which means keyboard navigation, focus rings, and screen-reader labels work the way the platform expects. The drop zone accepts files via the keyboard-accessible file picker as well as drag-and-drop, and result downloads use standard browser download flows. If you spot an accessibility gap, Favtoo treats it as a bug worth fixing.
How fast is Color Mixer?
Most jobs finish in seconds. Speed scales with input size and with how many CPU cycles your browser tab has available — the engine runs in your browser, so it shares resources with whatever else you have open. For inputs near the 0 MB ceiling, expect anywhere from a few seconds to roughly a minute on a typical laptop. Closing other heavy tabs noticeably speeds things up.