Free Color Picker – Convert HEX, RGB, HSL & CMYK Color Codes
The NexVaani Color Picker is a versatile design tool for web developers, graphic artists, and UI designers. Inspect colors visually, convert between HEX, RGB, HSL, and CMYK color spaces, generate complementary and monochromatic palettes, and verify WCAG 2.1 color contrast accessibility.
The NexVaani Color Picker converts color formats (HEX, RGB, HSL, CMYK), tests WCAG contrast ratios, and generates harmonic palettes in your web browser.
Smart 1-Click Workflow Chains (Next Steps):
Real-World Use Cases & Applications
- Converting HEX color codes to RGB/RGBA or HSL for CSS stylesheets and Tailwind config.
- Checking WCAG 2.1 AA and AAA color contrast ratios for accessible web typography.
- Creating harmonious color palettes (complementary, triadic, analogous) for brand design.
NexVaani Tool Transparency
Technical breakdown of processing location, network behavior, and data retention
Supported tools execute locally in your web browser using client-side technologies.
Calculations and text transformations are performed locally in your browser.
Temporary processing data is handled locally by your browser and is not stored by NexVaani.
No watermark, stamp, or branding is added to the exported file. Output quality depends on your source file and selected settings.
How to Use Color Picker & Palette Generator (Step-by-Step)
Pick a Color
Use the visual color wheel, eyedropper, or type a HEX/RGB code.
Inspect Converted Values
View converted values in HEX, RGB, HSL, and CMYK.
Check WCAG Contrast
Verify text readability against light and dark backgrounds.
Copy Color Code
Copy the CSS string with one click.
Technical Architecture & Execution Mechanics
Color Space Transformation Mathematics
RGB to HSL converts red, green, and blue coordinates into cylindrical hue (0-360°), saturation (0-100%), and lightness (0-100%). WCAG Relative Luminance is calculated as L = 0.2126*R + 0.7152*G + 0.0722*B after sRGB gamma expansion. Contrast Ratio = (L1 + 0.05) / (L2 + 0.05).
Contrast_Ratio = (Lighter_Luminance + 0.05) / (Darker_Luminance + 0.05)Technical Limitations & Operational Constraints
- CMYK conversions use standard additive RGB approximations; professional offset print shops may require Pantone ICC color profiles.
Key Specifications & Capabilities
- Multi-Format Conversion – HEX (#06b6d4), RGB (rgb(6,182,212)), HSL, and CMYK
- WCAG 2.1 Contrast Checker – Real-time AA and AAA accessibility pass/fail indicator
- Harmonic Palette Generator – Complementary, Triadic, Analogous, and Monochromatic shades
- 1-Click CSS Copy – Copy formatted CSS color strings directly to clipboard
Frequently Asked Questions & Answers
What is a passing WCAG color contrast ratio for normal text?
WCAG 2.1 Level AA requires a contrast ratio of at least 4.5:1 for normal text (3:1 for large text).
How do I convert HEX to RGB in CSS?
HEX #06b6d4 converts to RGB(6, 182, 212) or RGBA(6, 182, 212, 1.0).
Are my files uploaded, analyzed, or stored on NexVaani servers?
Where supported, tool inputs and files are processed locally inside your web browser using WebAssembly and HTML5 Canvas. Your files are not uploaded to NexVaani file-processing servers.
Rate Color Picker & Palette Generator
Current Community Rating: 4.9 / 5.0 (2,110 verified reviews)
Every formula, algorithm, and WebAssembly execution path is verified for client-side sandbox isolation, numeric accuracy, and zero server file transfers.
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