RGB/CMYK转换

Tool Introduction

“RGB/CMYK Conversion” is an efficient and convenient online bidirectional color code conversion tool. Whether you are a designer, developer, or content creator, you can easily convert RGB color codes (e.g., for web pages and screen display) to CMYK color codes (for printing) and vice versa using this tool. This tool supports two mainstream functional color code formats for input: rgb(R, G, B) and cmyk(C, M, Y, K), helping you quickly and accurately obtain the desired color values.

How to Use

1. Select Conversion Direction: This tool supports bidirectional conversion. If you want to convert RGB to CMYK, please enter the RGB value in the “RGB Code” input box; if you want to convert CMYK to RGB, enter the CMYK value in the “CMYK Code” input box.
2. Enter RGB Code: Enter a standard RGB color value in the “RGB Code” input box, in the format rgb(R, G, B), for example: rgb(124, 96, 200). The values of R, G, B are integers ranging from 0-255.
3. Enter CMYK Code: Enter a standard CMYK color value in the “CMYK Code” input box, in the format cmyk(C, M, Y, K), for example: cmyk(38, 52, 0, 22). The values of C, M, Y, K are integers or floating-point numbers ranging from 0-100.
4. View Results: After entering the color code on either side, the input box on the other side will automatically display the converted corresponding color code in real-time.

Input Parameter Format:

• RGB: rgb(R, G, B), R, G, B are integers from 0-255.
• CMYK: cmyk(C, M, Y, K), C, M, Y, K are integers or floating-point numbers from 0-100.

Output Result Format:

• RGB conversion result is: rgb(R, G, B).
• CMYK conversion result is: cmyk(C, M, Y, K).

 

Frequently Asked Questions

• Q: What input formats does this tool support?
• A: This tool primarily supports two functional color code formats: rgb(R, G, B) (R,G,B values range 0-255) and cmyk(C, M, Y, K) (C,M,Y,K values range 0-100).
• Q: What is the format of the output result?
• A: The output result is consistent with the expected format of the input box, i.e., RGB is converted to rgb(R, G, B) format, and CMYK is converted to cmyk(C, M, Y, K) format.
• Q: What is the conversion accuracy between RGB and CMYK?
• A: This tool uses industry-standard algorithms for color conversion, resulting in high accuracy. However, please note that because RGB and CMYK are different color gamut models, some colors may have slight visual differences between the different models.

Notes

• Please ensure that the format of the entered RGB or CMYK code strictly complies with the requirements; incorrect formats may lead to conversion failure or inaccurate results.
• RGB values should be between 0-255, and CMYK values should be between 0-100. Entering values outside these ranges may lead to unexpected conversion results.
• This tool is an online converter, no software or plugins need to be installed, it's ready to use.

Origin and Differences of RGB and CMYK

RGB (Red, Green, Blue) is an additive color model, typically used for screen display devices such as televisions, computer monitors, mobile phones, and tablets. It produces various colors by superimposing red, green, and blue light; when the three lights are superimposed equally, white is produced. RGB color values usually range from 0-255, representing the intensity of light. Its characteristics are vibrant colors, high saturation, and the ability to display a wide color gamut.

CMYK (Cyan, Magenta, Yellow, Key/Black) is a subtractive color model, primarily used for printing. It forms colors by absorbing light through cyan, magenta, and yellow inks. Theoretically, equal superposition of the three primary inks produces black, but in actual printing, it often tends towards dark brown. Therefore, black (K) ink is additionally added to provide a purer black and richer details. CMYK color values are usually expressed as percentages, ranging from 0-100%. Its characteristics are that color reproduction is limited by ink and paper, and the color gamut is relatively smaller than RGB.

When to Use RGB, When to Use CMYK

Understanding the differences between RGB and CMYK is crucial for correctly choosing the color mode:

• Use RGB: When your design work is primarily displayed on electronic screens, such as web design, UI interfaces, digital advertising, video content, emails, etc. In these scenarios, using RGB ensures color accuracy and vibrancy.
• Use CMYK: When your design work needs to be physically printed, such as brochures, posters, business cards, book covers, packaging design, etc. Converting the design to CMYK mode before sending the file to the printer is an essential step, which helps avoid color deviations in the printed product and ensures that the printing effect matches expectations.