No—your data is not uploaded anywhere when you mix two HEX colors with Color Mixer: all color math runs locally in your browser. The tool's disclosed behavior is specific: the colors, values, and inputs involved in the blend are not sent to a server. You can enter two colors, choose their proportions, inspect the gradient, and copy the output without creating an account, and there are no usage limits. This local processing model applies to the blending task itself: it does not depend on uploading a palette, image, or project file. The Color Mixer works with two input colors rather than a stored library, returning one blended color plus a visual transition between the endpoints. Its result panel gives you a lowercase six-digit HEX value and an rgb() string for the selected blend, while the gradient previews eleven evenly spaced steps, including both original colors. In practical terms, you can treat the entered codes and chosen ratio as working values handled by the tool in the current browser rather than data submitted for remote processing.
What the local-processing answer covers
The relevant privacy boundary is the blending operation itself. Color Mixer parses Color A and Color B, applies the ratio, and calculates the output and gradient on your device. Those colors, values, and inputs are never uploaded to a server. The tool also requires no sign-up and has no usage limits, so there is no account profile or remote blend job involved in creating the result.
- Entered data: Both color codes or rgb() strings are parsed and processed locally.
- Ratio adjustments: The selected percentage is applied to the local calculation rather than sent away for processing.
- Displayed outputs: The result and gradient are calculated in the browser, while Copy places the result hex on your clipboard.
This statement concerns Color Mixer's own processing rather than your browser history, extensions, or device settings. The two-color workflow does not ask for an image or project file, so there is no user-asset upload step. If a color code is sensitive, local processing is the relevant product fact; avoid reposting it to unrelated services.
Entering two colors without an upload
Each input box represents one endpoint of the blend. Type a short HEX, full HEX, or rgb() value, or use the native swatch beside the field. Text parsing is case-insensitive and tolerates extra spaces or a missing hash mark.
| Input method | Accepted example | Details |
|---|---|---|
| Short HEX | #f00 | The leading hash is optional |
| Full HEX | #3b82f6 | Upper- and lower-case letters work |
| rgb() string | rgb(59, 130, 246) | Extra spaces are ignored |
| Native swatch | Click beside either field | Sets one endpoint visually |
A swatch selection is simply another way to set that field's color; it does not load a file. Keep Color A and Color B distinct in your notes because changing either endpoint changes the intermediate steps and final output.
Blend the colors and copy the output
- Set Color A. Enter the first color as a short or full HEX value or an rgb() string, or click its swatch to choose a color visually.
- Set Color B. Enter the second color in the same way, using a supported text format or the adjacent swatch.
- Choose the ratio. Drag the slider to control the blend: 0% is pure A, 100% is pure B, and 50% is the midpoint.
- Inspect the result. Read the lowercase six-digit HEX and RGB values in the result panel, then examine the gradient's eleven evenly spaced steps, including both endpoints.
- Copy the blend. Click Copy to place the result hex on your clipboard.
The result updates instantly as you move the slider. At 50%, each red, green, and blue channel receives equal weighting before the displayed integer is rounded. The gradient provides an at-a-glance view of the transition, while the result panel provides the exact values for reuse.
Use the displayed hex or rgb() string in your design or code. Copy specifically places the result hex on the clipboard; the RGB string remains available to read beside it. The ratio label always reports the current split, making it easier to return to the same setting after changing an endpoint.
What the browser calculates for each blend
Color Mixer uses simple sRGB linear interpolation. For each red, green, and blue channel, it computes result = round(A * (1 - ratio) + B * ratio). Internally, the ratio is clamped to the 0-to-1 range; the interface expresses it as a percentage. Channel values stay within 0–255 and are rounded to 8-bit integers for display.
For one worked example, blend #ff0000 with #0000ff at 50%. Red becomes round(255 × (1 - 0.5) + 0 × 0.5) = 128; green remains round(0 × (1 - 0.5) + 0 × 0.5) = 0; blue becomes round(0 × (1 - 0.5) + 255 × 0.5) = 128. Together, the result is rgb(128, 0, 128), or #800080.
This method directly averages 8-bit sRGB channel values. It is not gamma-corrected optical light mixing and does not simulate subtractive paint or ink. The browser performs this plain arithmetic locally, which aligns with the tool's no-upload behavior. A magenta digital blend is therefore not a malfunction: physical red and blue pigments behave differently from screen values.
Matching the blend method to your project
The right interpretation depends on whether you need a digital color or a prediction of physical materials. This table separates the uses supported by the calculation from its important boundary.
| Project goal | What the tool provides | Important boundary |
|---|---|---|
| Website, app, icon, or chart color | A digital intermediate based on weighted sRGB channels | It represents a screen-color value |
| CSS gradient stop or color scale | A selected blend and an eleven-step transition preview | The panel supplies exact hex and rgb() values |
| Halfway tint, shade, or brand-color adjustment | A ratio-weighted intermediate between two endpoints | Endpoint order and ratio determine the direction and strength |
| Acrylic, printer ink, or paint on paper | No physical pigment prediction | Subtractive material mixing is outside the model |
For websites, apps, icons, charts, and other screen output, the calculation matches the stated sRGB interpolation task. For real acrylics or printer inks on paper, treat the result only as a digital starting reference. Averaging screen values does not predict how pigments absorb or reflect light on a physical surface.
Recording and checking a blend you want to keep
A result hex by itself does not identify the endpoints or ratio that produced it. Record Color A, Color B, and the percentage shown in the ratio label. That three-part note lets you reproduce the same displayed result when you enter the values again.
Use the eleven-step gradient to judge the transition, then use the result panel when you need exact values. If you are checking a saved blend, compare the recorded ratio and both endpoints before changing anything. For a separate verification workflow, see how to check the result after mixing two HEX colors.
Keep the output in the format the next tool expects: hex is compact for CSS and design workflows, while rgb() makes the channel values explicit. The privacy answer stays the same in either case because the blending itself happens locally, without sending the entered values to a server.
For a deeper look, see CMYK to RGB to Hex: Get Both Outputs at Once.