sRGB to LAB Converter

Convert sRGB color values to LAB for color management with alpha channel support

Custom background color for alpha compositing (used when Custom Background is selected)

Key Facts

Category
Design & Color
Input Types
textarea, select, color
Output Type
text
Sample Coverage
4
API Ready
Yes

Overview

The sRGB to LAB Converter allows you to precisely transform sRGB color values into the CIELAB color space, ensuring accurate color management and device-independent color representation.

When to Use

  • •When preparing assets for professional print workflows that require device-independent color profiles.
  • •When you need to perform color calculations or comparisons that are more perceptually uniform than sRGB.
  • •When converting web-based colors that include transparency (alpha channels) into a standardized LAB format.

How It Works

  • •Input your sRGB values using various formats like hex codes, RGB triplets, or CSS-style strings.
  • •Select your preferred output format, such as standard lab() syntax or simple comma-separated values.
  • •Choose how to handle transparency by compositing the alpha channel against a white, black, or custom background color.
  • •Click convert to generate the corresponding LAB color coordinates instantly.

Use Cases

Standardizing brand colors across digital and print media by converting web hex codes to LAB.
Calculating color differences (Delta E) by converting sRGB values into the perceptually uniform LAB space.
Processing UI design assets with transparency for integration into color-managed software.

Examples

1. Converting Brand Hex to LAB

Graphic Designer
Background
A designer needs to provide a brand color specification in LAB format for a print vendor.
Problem
The brand color is only defined as a hex code (#FF0080).
How to Use
Paste #FF0080 into the input field and select 'labeled' as the output format.
Example Config
format: labeled
Outcome
The tool outputs 'L:50 A:79 B:-11', providing the exact LAB values needed for the print specification.

2. Processing Transparent UI Elements

Web Developer
Background
A developer is migrating UI components to a system that requires solid color values for accessibility testing.
Problem
The UI elements use semi-transparent RGBA colors that need to be flattened.
How to Use
Input the rgba(255, 0, 128, 0.5) value, select 'Composite with white background', and choose 'css' format.
Example Config
alphaHandling: white, format: css
Outcome
The tool calculates the flattened color and returns the result in the standard lab(L A B) CSS format.

Try with Samples

design
SVG Samples
Scalable Vector Graphics (SVG) samples demonstrating various SVG features and techniques
keywords lab
sample
Hex/Unicode Encoding Format Samples
Examples of hex (\xXX) and unicode (\uXXXX) escape sequence encoding formats
task convert
sample
WebRTC Real-Time Communication Samples
Comprehensive WebRTC samples for peer-to-peer audio/video communication, data channels, screen sharing, and signaling server implementation
keywords screen
sample
Text Case Format Samples
Examples of different text case formats: camelCase, snake_case, kebab-case, PascalCase, and more
task convert
sample

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FAQ

What is the difference between sRGB and LAB?

sRGB is a device-dependent color space optimized for screens, while LAB is a device-independent color space designed to represent all colors visible to the human eye.

How does the tool handle alpha channels?

The tool composites the transparent color over a selected background color (white, black, or custom) before performing the conversion to ensure a solid color result.

Can I convert multiple colors at once?

Yes, you can paste multiple sRGB values into the input area, each on a new line, to convert them in a single batch.

Which output format should I choose?

Choose 'lab()' for CSS compatibility, 'simple' for data processing, or 'labeled' for human-readable documentation.

Is the conversion accurate for print?

LAB is the standard for color communication in print, making this tool ideal for bridging the gap between digital design and physical production.

API Documentation

Request Endpoint

POST /en/api/tools/srgb-to-lab-converter

Request Parameters

Parameter Name Type Required Description
srgb textarea Yes -
format select Yes -
alphaHandling select Yes -
customBackground color No Custom background color for alpha compositing (used when Custom Background is selected)

Response Format

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}
Text: Text

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-srgb-to-lab-converter": {
      "name": "srgb-to-lab-converter",
      "description": "Convert sRGB color values to LAB for color management with alpha channel support",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=srgb-to-lab-converter",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

If you encounter any issues, please contact us at [email protected]