Color converter

Color converter is a free tool that converts a color entered as HEX, HEX alpha, RGB, RGBA, HSV, HSL, or HSLA into multiple equivalent color formats.

What workflow problem does color conversion solve?

Color conversion lets you move the same color value between design tools, CSS, application code, API responses, and configuration files that expect different notation.

For example, a design specification may provide #336699, while an animation library expects RGB channels or an editing control exposes hue, saturation, and lightness. Converting the value avoids estimating the channels by eye.

• Translate a HEX token from a design system into an RGB value for image-processing code.
• Inspect the alpha channel in an RGBA or HSLA value when an overlay looks too light or too dark.
• Convert an API-provided HSV value before placing it in a CSS file.
• Compare colors from Figma, browser developer tools, a mobile app, and a theme configuration.

The input travels to the server over HTTPS because conversion happens on the server. It is not stored.

Which representation belongs in your code?

Choose the representation that matches the destination and the way the color will be edited. Equivalent formats describe the same color, but they expose different parts of the model.

• HEX is compact and common in CSS, design tokens, and configuration files. Six-digit HEX stores red, green, and blue as hexadecimal channel values.
• HEX Alpha adds transparency to a HEX color. Check the required byte order because CSS commonly uses #RRGGBBAA, while some native APIs and file formats use #AARRGGBB.
• RGB is convenient when code changes red, green, and blue channels directly. Conventional 8-bit channels run from 0 through 255.
• RGBA includes an alpha channel. In common CSS notation, alpha may be represented as a number from 0 to 1 or as a percentage.
• HSV is often useful in color-selection interfaces because saturation and value are straightforward editing controls. HSV is not a standard CSS color function, so it commonly needs conversion before use in a stylesheet.
• HSL is practical for generating lighter, darker, or less saturated variations while retaining a recognizable hue.
• HSLA adds transparency to HSL and is useful for overlays or state colors that need editable lightness and opacity.

How can you sanity-check the converted values?

You can sanity-check a result by confirming channel ranges, alpha behavior, and a few known reference colors. The labeled HEX, HEX Alpha, RGB, RGBA, HSV, HSL, and HSLA values provide different descriptions of the entered color.

A small opaque example has exact, recognizable equivalents.

Input rgb(255, 0, 0)

Equivalent HEX #FF0000

Equivalent HSL hsl(0, 100%, 50%)

Equivalent HSV hsv(0, 100%, 100%)

Another reference point is pure blue.

Input hsl(240, 100%, 50%)

Equivalent RGB rgb(0, 0, 255)

Equivalent HEX #0000FF

Converted values may use decimals because RGB, HSL, and HSV do not divide into one another evenly. Small rounding differences are normal. If an opaque input produces an alpha-capable format, the alpha component should represent full opacity even if the destination writes that value as 1, 100%, or FF.

Input boundaries and malformed values

Each color model has its own grammar, so an input that resembles a color can still be invalid or ambiguous.

• A six-digit HEX value needs six hexadecimal digits. Letters outside A through F are not hexadecimal digits.
• RGB commonly uses three channels. An omitted channel or values outside the destination's accepted range can cause failure.
• RGBA and HSLA can include an alpha component to represent transparency.
• HSL and HSV need a hue plus saturation and lightness or value. Swapping the last two components changes the color.
• A bare number is ambiguous. For example, 255 does not identify a complete RGB color.
• Accented letters, emoji, and non-Latin characters are not part of numeric color notation. Punctuation is meaningful and should match the selected format.
• Empty input contains no color to convert. Very long pasted content may include a CSS property, comment, or multiple values rather than one supported color value.

This converter is not a CSS parser, color-profile converter, or accessibility checker. The accepted input formats are the listed color notations, so remove unrelated code and verify the value before using it in production. A Color picker can help when the starting point is visual rather than numeric.

When can you skip conversion?

You can skip conversion when the existing value already matches the destination and no human needs another representation. Rewriting an already suitable color can introduce rounding, formatting changes, or unnecessary review noise.

Prettifying a color value solely for machine-readable data is rarely useful. Likewise, converting an already compact six-digit HEX value into another format does not reduce file size in a meaningful way. Keep the source format when a third-party API requires exact text, when snapshot tests compare serialized output, or when an eight-digit HEX convention has not been confirmed.

Frequently asked questions

Is alpha the same as CSS opacity?

Alpha belongs to an individual color, while the CSS opacity property applies to an entire element and its descendants as a rendered group. They can produce different results when an element contains text, borders, shadows, or nested content.

Why does a gray color have an unexpected hue?

Hue is undefined when saturation is zero because no dominant color direction exists. Software may retain an earlier hue or report a conventional value such as zero, so compare gray colors by channels, lightness, or value rather than hue alone.

How should converted colors be compared in automated tests?

Compare normalized channel values with a small numeric tolerance when decimals or model conversion are involved. Exact string comparison is suitable only when formatting, capitalization, spacing, and rounding are part of the requirement.

Does conversion preserve accessibility contrast?

An exact conversion of an opaque color preserves its rendered color, but contrast still depends on the foreground and background pair. Transparent colors require compositing against the actual background before calculating contrast, so a converted RGBA value alone cannot establish a contrast ratio.

Can conversion recover a color profile from HEX or RGB?

No. Basic HEX and RGB notation does not carry an embedded ICC profile. Confirm the expected color space separately when values move between web content, print workflows, photography software, or wide-gamut displays.

Before copying a result, confirm the destination syntax, alpha order, required precision, and color space.