Result

Overview

Color Lab is a comprehensive color conversion and exploration tool that transforms colors between multiple format systems including HEX, RGB, HSL, HWB, LCH, and CMYK. Whether you are a web designer needing CSS color values, a print designer working with CMYK, or a developer building accessible color systems, Color Lab provides instant conversions with visual previews. The tool accepts color input via a visual picker or by pasting any standard color format.

How to Use

Choose your input method
Either use the visual color picker to select a color interactively, or paste a color value in any standard format (like #1ea54c, rgb(30, 165, 76), hsl(140, 69%, 38%), or even a color name like "forestgreen") into the Color value field.
View instant conversions
The tool automatically updates with real-time conversions as you change the color. No button press needed - Color Lab runs automatically to show your color in all supported formats: HEX, RGB, HSL, HWB, LCH, CMYK, and the nearest named color.
Copy the format you need
Click any color format in the results to copy it directly to your clipboard. The visual preview at the top shows your selected color, making it easy to verify you have the right shade before copying values for use in your design or code.

Use Cases

Web Design and CSS Development

Convert between HEX, RGB, and HSL formats for CSS styling. Quickly switch between different color representations to find the most appropriate format for your use case - HEX for conciseness, RGB for color manipulation, or HSL for hue-based adjustments and creating color variations.

Design System Development

Build consistent color palettes by converting colors to HSL format, where you can easily adjust lightness and saturation while maintaining the same hue. This is essential for creating accessible color scales, theme variants, and ensuring sufficient contrast ratios across your design system.

Print Design and CMYK Conversion

Convert RGB or HEX colors to CMYK values for print materials. While screen colors (RGB) and print colors (CMYK) use different color models, Color Lab provides CMYK approximations to help you understand how your digital colors will translate to printed materials.

Accessibility and Color Analysis

Use LCH (Lightness, Chroma, Hue) format to work with perceptually uniform colors, which is valuable for creating accessible color combinations. LCH makes it easier to ensure sufficient contrast for WCAG compliance and to create color scales that appear evenly spaced to the human eye.

Brand Color Documentation

Document brand colors across all relevant formats for different platforms and use cases. Generate a complete color specification showing HEX for web, RGB for digital design, CMYK for print, and HSL for programmatic color manipulation, ensuring consistency across all media.

Frequently Asked Questions

What is the difference between RGB and HEX?

RGB (Red, Green, Blue) expresses colors as three decimal values from 0-255, like rgb(30, 165, 76). HEX is the same color model but uses hexadecimal notation, typically written with a # symbol like #1ea54c. They represent exactly the same colors, just in different numeric bases. HEX is more compact and common in CSS.

When should I use HSL instead of RGB?

Use HSL (Hue, Saturation, Lightness) when you need to manipulate colors programmatically, create color variations, or adjust brightness. HSL makes it intuitive to create lighter/darker versions of a color by just changing the lightness value, or to create a monochromatic palette by keeping hue constant while varying saturation and lightness.

What is LCH and why is it useful?

LCH (Lightness, Chroma, Hue) is a perceptually uniform color space, meaning that the same numerical difference in LCH values corresponds to roughly the same perceived color difference regardless of which colors you are comparing. This makes LCH ideal for creating accessible color scales and ensuring consistent visual spacing between colors.

Can I trust the CMYK values for print?

The CMYK values provided are approximations converted from RGB color space. For professional print work, always use design software with proper color management and consult with your printer, as accurate RGB-to-CMYK conversion depends on specific printer profiles, paper types, and ink characteristics. Color Lab's CMYK values are useful for initial estimates and documentation.

What does HWB stand for?

HWB stands for Hue, Whiteness, Blackness. It is an alternative way to describe colors that some find more intuitive than HSL. Instead of saturation and lightness, HWB uses the amount of white and black mixed with the pure hue. HWB is supported in modern CSS (e.g., hwb(140 12% 35%)).

Concept Notes

Color formats and perception

Web colors assume sRGB; wide-gamut displays like Display P3 render more saturated results, affecting perceived contrast. HEX (#rrggbb), RGB, HSL, HWB, and LCH all describe the same color differently—newer CSS supports lch() and hwb() for perceptually uniform ramps, while three-digit HEX expands to six digits for full precision.