Color Converter

100% free · Runs 100% in your browser · No signup needed

Formats (click copy to copy a value)

#25B7D3

rgb(37, 183, 211)

hsl(189, 66%, 49%)

Contrast ratio (WCAG)

Sur Color Converter

Color Converter - Free Online Tool

The Color Converter translates colors between HEX, RGB and HSL formats and checks contrast ratios for accessibility. Designers and developers constantly convert colors - a designer hands over #25B7D3, but your CSS needs rgb(), your design tool wants HSL, and your accessibility audit demands a contrast ratio. This tool does all three conversions plus the WCAG check in one place.

How to use: 1) Pick a color with the color picker or type/paste a HEX value (3 or 6 digits). 2) Instantly see the HEX, RGB and HSL equivalents with one-click copy buttons. 3) Check the contrast ratios against white and black text with WCAG AA/AAA pass/fail verdicts.

Why use it: Color format mismatches waste surprising amounts of time - converting by hand, guessing HSL values, or shipping text that fails accessibility audits. The contrast checker is the real productivity win: instead of discovering after launch that your button text is unreadable, you verify the ratio against WCAG standards before writing a line of CSS.

Key benefits: Instant three-way conversion between HEX, RGB and HSL as you type. Live color preview swatch plus picker for visual selection. WCAG contrast ratios computed against both white and black with clear AA/AAA verdicts. One-click copy for each format, ready to paste into stylesheets. Runs entirely in your browser - free with no signup.

FAQs: What is the difference between HEX, RGB and HSL? HEX and RGB describe the same color differently (hex is compact, rgb is explicit); HSL describes hue, saturation and lightness, which is more intuitive for adjusting colors. What contrast ratio do I need? WCAG AA requires 4.5:1 for normal text and 3:1 for large text. Why does my 3-digit HEX work? Shorthand like #fff expands to #ffffff automatically. Can I check two custom colors? The tool checks your color against white and black, the two most common text colors.

Pro tips: When adjusting a brand color, convert to HSL first - tweaking lightness and saturation there is far more intuitive than guessing RGB values. Always verify text contrast before finalizing a palette; fixing accessibility after launch is ten times more expensive. Keep a record of your palette in all three formats for handoff between designers and developers. FistHost offers this converter free with no signup.

Related tools: Designers pairing this with the Password Generator for client accounts get a full launch toolkit, while developers use the Base64 Encoder for data-URI assets. All FistHost utilities are free and browser-based.

How to Use Color Converter: Step by Step

Enter a color in any format — HEX (#25B7D3), RGB, or HSL values — or pick from the color picker.
The tool instantly shows the equivalent values in all formats.
Review the contrast ratio checker against your background color to verify accessibility.
Adjust lightness or saturation and watch all formats update together.
Copy the format your code needs — HEX for CSS, RGB for design tools, HSL for programmatic tweaks.

Pro Tips

Aim for a contrast ratio of at least 4.5:1 for body text to meet accessibility guidelines.
HSL is the easiest format for creating color variations — just shift the lightness value.
Copy HEX values without the # when a tool or platform expects the raw code.

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