RGB & CIELab Color Converter

RGB & CIELab Converter: Core Features and Principles

When you need to ensure consistent color display across different devices, this tool provides real-time, two-way conversion between RGB (Red, Green, Blue) and CIELab (a device-independent color space) using precise algorithms. CIELab is a device-independent color space based on human visual perception, where L* represents lightness (0-100), a* represents the red-green axis (-128 to 127), and b* represents the yellow-blue axis (-128 to 127), accurately reflecting how the human eye perceives color differences.

Why Choose Our RGB & CIELab Converter?

• Real-time two-way conversion: Instantly outputs the corresponding result after entering RGB or CIELab values, with no manual submission required.
• Multi-format compatibility: Supports both rgb(255,0,0) and 255,0,0 input formats to suit different use cases.
• Precise algorithms: Utilizes the standard CIE 1976 conversion formula to ensure accurate color space conversion.

How to Use

1. Enter the color value in the RGB input box (format: rgb(255,0,0) or 255,0,0).
2. View the real-time updated CIELab conversion result (format: Lab(54,80,69)).
3. For reverse conversion, simply enter the Lab value in the CIELab box to get the corresponding RGB code.

Frequently Asked Questions (FAQ)

• How do I correctly input RGB values?

  A: Two formats are supported: the CSS standard rgb(255,0,0) or pure numeric values like 255,0,0 (value range 0-255).

• What factors affect conversion accuracy?

  A: Color gamut differences may cause an error of about 0.5%. The limited color gamut of RGB cannot fully cover the theoretical color space of CIELab.

Important Notes

RGB components must be within the 0-255 range, and the CIELab L* value is limited to 0-100. Exceeding these ranges will result in conversion errors. It is recommended to process sensitive color data locally; this web page does not store any input records.

Technical Notes & Suggestions

The printing industry recommends prioritizing CIELab values to ensure color consistency. A typical example: web red rgb(255,0,0) corresponds to Lab(54,80,69). Please note that monitor color gamut limitations may cause slight differences between the conversion results and the actual printed output.