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FreeFormatHub
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Color Format Converter

Convert and compare colors across HEX, RGB, HSL, HSV, CMYK, LAB, and named palettes with live preview, alpha handling, and palette-ready exports.

Color Input

Examples:

Color Formats

Options

Select output formats (empty = all)

How It Works

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Input Any Color Format

Paste HEX, RGB(A), HSL(A), HSV, CMYK, LAB, or CSS named colors. Auto-detection picks the right parser, and manual overrides help with edge cases.

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Pick Output Targets

Select which formats to display, toggle uppercase HEX, and include alpha channels. Designers can focus on the formats their tools require.

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Preview & Fine-Tune

See live color swatches, inspect numeric breakdowns, and compare LAB values for accessibility and brand consistency checks.

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Export & Share Palettes

Copy formatted outputs, download palette snippets, or drop conversions into tool history for later reference when collaborating.

Problems It Solves

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Problem

Hand-converting between color models wastes time and introduces rounding mistakes in design specs and QA documents.

Solution

Generate synchronized HEX, RGB, HSL, HSV, CMYK, and LAB values instantly with consistent rounding so designers and developers stay aligned.

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Problem

Ensuring cross-platform color consistency is difficult when web, print, and design tools rely on different models.

Solution

Compare values across digital and print spaces, including CMYK and LAB, to confirm brand colors before exporting assets or sending to vendors.

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Problem

Designers often need quick previews with transparency support to test overlays and UI states without opening a heavy design suite.

Solution

Use the live preview with alpha awareness to visualize overlays, backgrounds, and accessible contrasts directly in the browser.

Why Choose This Tool

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Pixel-Perfect Accuracy

Conversion formulas are tuned for professional workflows, including LAB precision and CMYK rounding, so your specs match across mediums.

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Privacy-Friendly

Brand palettes, in-progress designs, and client colors never leave your browser. Ideal for agencies working under NDA.

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Designed for Teams

Copy/paste friendly outputs, downloadable snippets, and persistent history streamline design handoffs and QA reviews.

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Versatile Format Support

From CSS-ready HEX to print-focused CMYK, the converter adapts to product, marketing, and brand teams in one place.

Frequently Asked Questions

What's the difference between HSL and HSV?
HSL (Hue, Saturation, Lightness) is more intuitive for adjusting brightness. HSV (Hue, Saturation, Value) is more intuitive for color picking and matches how many color pickers work.
When should I use CMYK vs RGB?
Use CMYK for print design (subtractive color). Use RGB for digital displays (additive color). Note that not all RGB colors can be accurately reproduced in CMYK.
Are named colors reliable for web design?
Named colors like "red" or "blue" are supported by all browsers but offer limited color options. Use HEX or RGB for precise color control.
What is LAB color space?
LAB is a device-independent color space that represents how humans perceive color. It's useful for color matching and professional photo editing.
How do I handle transparency/alpha?
Use RGBA for RGB with alpha, HSLA for HSL with alpha, or 8-digit HEX (#RRGGBBAA). Alpha values range from 0 (transparent) to 1 (opaque).