Color Code Converter

Convert between all color formats: HEX, RGB, RGBA, HSL, HSLA, CMYK, and CSS named colors simultaneously.

Tested tool guide Tested browser tools Checked August 16, 2026

What Color Code Converter does, with a checked example

A pasted color value becomes a side-by-side set of HEX, RGB, RGBA, HSL, HSLA, CMYK, and CSS named-color representations. This helps when a design token, stylesheet, graphics application, or print handoff expects a different notation. The important surprise is that equivalent numbers do not guarantee identical appearance everywhere: CMYK depends on printing conditions, while screen formats describe emitted color. Also, only colors in the CSS keyword set have an exact named-color spelling.

Worked example

A concrete input and expected output from the current implementation.

Input

red

Expected output

HEX: #FF0000; RGB: 255, 0, 0; RGBA: 255, 0, 0, 1; HSL: 0 degrees, 100%, 50%; HSLA: 0 degrees, 100%, 50%, 1; CMYK: 0%, 100%, 100%, 0%; CSS named color: red

The CSS keyword red is full-intensity red with no green or blue, so its HEX value is #FF0000. Its HSL lightness is 50%, and its opaque alpha value is 1.

How the result is produced

Parallel representations

The entered notation identifies a color and, when present, its opacity. Color Code Converter then reports alternate representations together: base-16 HEX channels, decimal RGB channels, hue/saturation/lightness coordinates, alpha-bearing RGBA and HSLA values, subtractive CMYK percentages, and a CSS named-color result. These fields describe one requested color rather than independent swatches.

Channel meanings

RGB and HEX describe red, green, and blue components, while HSL organizes a screen color around hue, saturation, and lightness. RGBA and HSLA add alpha, where 1 is opaque and 0 is transparent. CMYK instead reports cyan, magenta, yellow, and black percentages. Changing notation alone does not calibrate a display or printer.

Good uses

Translate a HEX design token into RGB and HSL before editing it with channel controls.
Check the numeric equivalents of a CSS named color copied from a stylesheet.
Create a preliminary CMYK coordinate from a screen color for discussion with a printer.

Limits and checks

CSS keywords form a fixed list. Confirm that any named result is an exact match before replacing an arbitrary numeric color.
CMYK percentages alone are not a press proof; printed appearance also depends on inks, paper, equipment, and color management.
Copying only three color channels omits transparency. Preserve the RGBA or HSLA alpha value when opacity matters.

Common questions

Will the CMYK result match what my printer produces?

No guarantee. The percentages are useful as a notation conversion, but CMYK appearance depends on the intended printing condition, including inks, paper, press behavior, and color profile. For production work, use the destination printer's profile and proofing guidance. A screen color and printed color can share a nominal conversion without looking identical.

Can every HEX color be replaced by a CSS named color?

No. CSS named colors are a fixed set of keywords, so many HEX values have no exact keyword. If the converter presents a name for a value outside that set, verify whether it is an exact match or merely the closest label. Keep HEX, RGB, or HSL when exact numeric identity matters.

References and verification

The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.