Color Picker
Pick, sample, convert, harmonize, and check colors in one place. Use the Color Picker to select colors, sample them from images, view HEX, RGB, and HSL values, generate color harmonies, and check WCAG contrast ratios.
What You Can Do
| Capability | Practical use |
| Choose a color | Select a color directly with the picker interface. |
| Enter a color value | Start from a known color value instead of choosing manually. |
| Sample from an image | Pick a color directly from an uploaded image in the browser. |
| View HEX, RGB and HSL | Use the representation that fits your design or development workflow. |
| Generate harmonies | Explore related color combinations from a selected base color. |
| Check WCAG contrast | Measure contrast between colors for accessibility-focused decisions. |
How to Use the Color Picker
1. Choose or enter a color Select a color with the picker or enter a known value.
2. Sample an image when needed Use the image eyedropper to inspect a color directly from an image.
3. Read the color values Use the displayed HEX, RGB, or HSL value.
4. Explore harmonies Choose a harmony type to generate related colors.
5. Check contrast Compare colors and review the WCAG contrast ratio.
HEX, RGB, and HSL Color Values
A single color can be represented in different ways depending on the task. HEX is common in CSS and web interfaces. RGB represents red, green, and blue channel values. HSL describes hue, saturation, and lightness.
The Color Picker displays these values for the selected color so you can use the representation that fits your workflow instead of converting it manually.
Sample Colors Directly from an Image
When you need to match a color from a photograph, screenshot, mockup, or other image, the image eyedropper provides a direct workflow. Upload the image, sample the relevant area, and use the resulting color value in your design or development work.
Image color sampling is processed in the browser, so the sampling workflow does not require a server-side conversion request.
Generate Color Harmonies
Color harmonies help you explore relationships between a selected base color and related colors. The current selector includes:
- Analogous
- Complementary
- Split Complementary
- Triadic
- Tetradic
- Double Split Complementary
- Rectangle
Choose a harmony when you need a starting palette for an interface, brand direction, illustration, or other visual composition. Generated colors are a starting point; final choices should still be checked in the context of the design.
Check WCAG Contrast Ratios
Color contrast matters when text, icons, controls, or other interface elements need to remain distinguishable. The Color Picker calculates WCAG contrast ratios between colors.
Use the ratio as an accessibility check rather than judging contrast only by eye. The result can help identify combinations that need stronger separation.
Why Use an Online Color Picker?
The practical advantage is having several related color tasks in one browser-based workflow. Instead of switching between a picker, image sampler, color converter, harmony generator, and contrast calculator, you can move from selecting a color to inspecting, comparing, and reusing it in the same tool.
For developers, HEX/RGB/HSL values are useful when moving between design references and CSS. For designers, image sampling and harmonies provide a faster way to build from an existing visual reference
Common Color-Picker Tasks
| Use case | Practical use |
| Web and UI design | Identify interface colors and obtain values ready for design or CSS work. |
| Brand and visual systems | Sample colors from visual references and explore related harmonies. |
| Front-end development | Inspect HEX, RGB, or HSL values when implementing web colors. |
| Image-based color matching | Sample a color directly from an image rather than estimating it. |
| Accessibility checks | Compare foreground and background colors using a WCAG contrast ratio. |
Frequently Asked Questions
A color picker lets you select a color and inspect its color values. OnlineToolPot also lets you sample colors from images, generate harmonies, and check WCAG contrast ratios.
The confirmed color-value outputs are HEX, RGB, and HSL.
Yes. The image eyedropper can sample colors from an image, with the processing performed in the browser.
The selector includes Analogous, Complementary, Split Complementary, Triadic, Tetradic, Double Split Complementary, and Rectangle.
Yes. It calculates WCAG contrast ratios for color comparisons.
Yes. The color and image-sampling workflow runs in the browser rather than requiring a server-side conversion request.
Start Picking a Color
Choose a color above, sample one from an image, or enter a known value. Then use the HEX, RGB, or HSL result, explore a harmony, or check the WCAG contrast ratio.
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