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Color Converter

Convert between HEX, RGB, HSL, HSV and CMYK. Live preview. WCAG contrast checker for accessibility. Nothing leaves your browser.

How Color Converter works

Color converter translates a single color between HEX, RGB, HSL, HSV and CMYK, type in any format and all the others update instantly. It also runs a WCAG contrast check against white and black so you can assess whether a foreground/background pair meets accessibility requirements at AA or AAA level.

This tool is about one specific color and its representations across different color models. It is distinct from Color scheme (which generates multi-color palettes), Color palette (which extracts colors from an image) and Color blindness simulator (which previews how an image looks under different vision types). The RGB-to-CMYK conversion is device-independent, so treat it as a starting point and verify against your print profile.

Frequently asked questions

Is the color value I enter sent anywhere?

No. All color math, conversions between HEX, RGB, HSL, HSV and CMYK, and the WCAG luminance calculation, runs locally in your browser. Nothing is transmitted to Sunasty or any server.

What does the WCAG contrast check tell me?

It calculates the contrast ratio between your color and a reference (white or black) according to the WCAG 2.1 formula, then tells you which levels (AA at 4.5:1, AAA at 7:1 for normal text) are met. This helps you choose text or UI colors that are readable for people with low vision.

Why do CMYK values sometimes differ from what my design software shows?

RGB-to-CMYK conversion is mathematically well-defined but the final CMYK values in print workflows depend on the color profile and press calibration used. The values here are the device-independent conversion, use them as a starting point and verify against your print profile.

Does it work offline?

Yes, once the page has loaded. Because the processing happens on your device, you can disconnect from the network and the tool keeps working. This is the clearest proof that your data never leaves your machine.

Is it free? Do I need an account?

It is completely free and requires no sign-up. There are no watermarks, no daily limits and no tracking cookies needed to use the tool.