What this tool does
The color converter helps quickly translate values between HEX, RGB, RGBA, and HSL formats for CSS, design, and interfaces. RGBA supports an alpha channel for transparency.
How to use
- Enter a color in HEX, RGB, RGBA, or HSL format.
- Review the converted values and color preview.
- Copy the format you need with the button on the right side of the field.
Supported color formats
The converter accepts common CSS color formats: HEX, short HEX, RGB, RGBA, and HSL. It shows equivalent values and a preview so you can quickly compare a color across design files, code, and documentation.
HEX is convenient for tokens and mockups, RGB often appears in browser inspectors, RGBA adds transparency, and HSL lets you think in hue, saturation, and lightness. The same color can be stored in different formats depending on the workflow.
Alpha and rounding
RGBA can express transparency with an alpha value from 0 to 1 or with a percentage when the input supports that style. Small rounding differences can appear when converting between formats, especially with HSL, because each model describes color differently.
If a color belongs to a design system, choose one canonical format after conversion and avoid repeated back-and-forth conversions. That keeps tokens and code reviews easier to compare.
Interface checks and limits
The tool helps with syntax, but it does not validate contrast, accessibility, color profiles, wide-gamut values, or how a color appears on different screens. For UI work, check WCAG contrast, hover/focus states, and text visibility separately.
All calculations happen locally in the browser. The converter is best for quick CSS edits, preparing variables, matching a design, and copying values into a pull request or design task.