Color Converter: a practical guide
Convert HEX, RGB, and HSL locally with a live swatch. A practical guide to Color Converter: when it fits, how to get a reliable result, and the mistakes worth avoiding.
Convert HEX, RGB, and HSL locally with a live swatch. That single sentence is most of what Color Converter does—the rest is knowing when to reach for it, which inputs cause trouble, and how it fits alongside the other utilities in the same category.
When Color Converter is the right tool
Color work is iterative, so the value of a focused tool is how quickly it answers one question before you move on.
- Translate Figma tokens into CSS.
- Normalize brand colors across docs.
- Hand off HEX to engineers as rgb().
- Debug mismatched theme variables.
Getting a reliable result
Work from a single base color rather than adjusting several values at once, and keep the output format you actually ship—HEX for handoff, channels when you need alpha. Any pair that will carry text should be measured against a contrast threshold before it becomes a token, because a value that looks fine on one display can fail on another.
- Prefer six-digit HEX in shared tokens.
- Keep alpha separate if your pipeline needs it.
- Verify rounded HSL percentages before shipping.
Mistakes that waste time
- Mixing commas and slash syntax inconsistently.
- Assuming HSL round-trips with zero precision loss.
- Forgetting the leading # in HEX.
- Using device-dependent color spaces without conversion.
Privacy and local processing
Colors and any image you sample from stay in the browser. Nothing is uploaded, so brand assets and unreleased screenshots are safe to work with here.
Related tools and reading
Open Color Converter to try it with your own input. Nearby utilities include Color Mixer and Color Picker. For background, read Color and contrast: making palettes readable, and browse the Color Toolkit collection for the rest of the cluster.
Try related tools
Keep exploring
- learnColor and contrast: making palettes readableHow WCAG contrast ratios work, why lightness is not brightness, and how to build a palette that passes accessibility checks.
- learnWorking with Color MixerBlend two HEX colors with a mix ratio. A practical guide to Color Mixer: when it fits, how to get a reliable result, and the mistakes worth avoiding.
- learnGetting started with Color PickerSample image colors and copy hex/rgb locally. A practical guide to Color Picker: when it fits, how to get a reliable result, and the mistakes worth avoiding.
- collectionColor ToolkitConvert, mix, and audit colors—HEX/RGB/HSL conversion, palettes, gradients, tints, and WCAG contrast checks.
- compareHEX vs RGB Color NotationTwo ways to write the same color in CSS—compare HEX codes and rgb() notation for readability, alpha support, and tooling.