HEX → RGB Converter

A HEX to RGB Converter is an online color conversion tool that changes a hexadecimal color code into its corresponding red, green, and blue values. The conversion is useful for web designers, developers, graphic designers, UI/UX professionals, and anyone working with digital colors.

HEX and RGB are two different ways of representing colors. A HEX color such as #3366CC contains three pairs of hexadecimal characters. Each pair represents one RGB channel.

RGB uses three numerical channels: red, green, and blue. In the standard 8-bit representation, each channel has a value from 0 to 255.

For example, the HEX value #3366CC converts to RGB(51, 102, 204).

Converting between HEX and RGB is useful because different tools, programming languages, design applications, and CSS workflows may require different color formats.

A HEX color code is a hexadecimal representation of a color. On the web, the most common six-digit HEX notation begins with a hash symbol followed by six hexadecimal characters.

Hexadecimal uses sixteen symbols: 0 through 9 and A through F. This allows each pair of hexadecimal characters to represent a number from 0 through 255.

For example:

#FF6600

In this color, FF is the red channel, 66 is the green channel, and 00 is the blue channel.

HEX notation is popular because it is compact and easy to use directly in CSS and many design tools.

RGB stands for Red, Green, and Blue. It is an additive color model used extensively for digital displays and computer graphics.

In the common 8-bit RGB model, each channel can contain a value from 0 to 255. Combining the three channels produces millions of possible colors.

When all three channels are zero, the result is black. When all three channels are 255, the result is white.

HEX to RGB conversion is straightforward because the standard six-digit HEX format directly represents the three RGB channels. Each two-character hexadecimal pair is converted into a decimal number.

Each two-character hexadecimal value can be converted into a decimal RGB value. Hexadecimal uses base 16, while standard RGB channel values are commonly represented in decimal from 0 to 255.

For a HEX value written as:

#RRGGBB

The first pair RR represents red, the second pair GG represents green, and the third pair BB represents blue.

Mathematically, a hexadecimal pair can be interpreted as:

Decimal = first hexadecimal digit × 16 + second hexadecimal digit

For example, hexadecimal 2A becomes:

2 × 16 + 10 = 42

Therefore, the HEX channel 2A corresponds to the RGB channel value 42.

CSS also supports a shorthand three-digit HEX notation. Instead of six hexadecimal characters, a three-digit value contains one hexadecimal character for each RGB channel.

For example:

#F60

The shorthand expands each digit by repeating it:

#F60 → #FF6600

The expanded value can then be converted into RGB:

#FF6600 → RGB(255, 102, 0)

This shorthand is convenient for simple colors, while six-digit HEX values are more common when precise color selection is required.

Modern CSS also supports eight-digit HEX notation for colors that include an alpha channel.

#RRGGBBAA

The first six digits represent red, green, and blue. The final two hexadecimal characters represent alpha or transparency.

For example:

#3366CC80

Here, #3366CC represents the RGB color while 80 represents the alpha component.

If you only need the RGB color channels, the first six characters can be converted normally. If transparency is important, use a color workflow that preserves the alpha value as well.

RGB colors can be written in CSS using the traditional rgb() function. Modern CSS also supports additional syntax and color functions.

A basic RGB declaration looks like this:

color: rgb(51, 102, 204);

The same color can be represented as a HEX value:

color: #3366CC;

These values describe the same RGB color when interpreted in the same color space and with the same alpha conditions.

CSS also supports modern color functionality. For technical details, see the MDN CSS color documentation.

RGB colors are created by combining three channels. Each channel controls the intensity of one primary component of the digital color.

Increasing one channel changes the resulting color. For example, RGB(255, 0, 0) represents red, RGB(0, 255, 0) represents green, and RGB(0, 0, 255) represents blue in the standard RGB representation.

When all channels have the same value, the result is a neutral gray ranging from black at RGB(0, 0, 0) to white at RGB(255, 255, 255).

Both formats can represent the same underlying RGB color. The best format depends on the tool, application, or development workflow.

UI designers frequently work with HEX values supplied by design systems, brand guidelines, and design applications. Developers may need the same colors in RGB format when implementing interactive components.

RGB values are particularly useful when individual channels need to be manipulated programmatically. This can be useful for dynamic themes, animations, image effects, color generators, and custom interface components.

A designer might provide:

#4F46E5

A developer can convert it into:

rgb(79, 70, 229)

The RGB representation can then be used in a JavaScript or CSS workflow where individual channel values are needed.

A professional design system often stores colors in more than one format. HEX may be convenient for documentation and CSS, while RGB can be useful for programming and color manipulation.

Keeping equivalent values documented can help designers and developers maintain consistency across websites, mobile applications, dashboards, marketing assets, and digital products.

However, it is important to avoid manually entering values from memory. A reliable converter reduces transcription mistakes when moving colors between formats.

You can also use our Color Picker, Color Name Finder, and Color Harmony Finder to continue your color workflow.

HEX and RGB are only two of many color representations used in modern design and development. Depending on the task, you may also need HSL, HSV, LAB, LCH, OKLab, or OKLCH.

HEX to RGB conversion is mathematically straightforward because each two-character hexadecimal pair directly corresponds to an RGB channel value in the standard 8-bit representation.

For a six-digit HEX color, there is no estimation involved in the basic conversion. The hexadecimal channel values are simply interpreted as decimal numbers.

For example, the hexadecimal value FF is decimal 255, while 00 is decimal 0.

The displayed color on a physical screen can still vary because displays, color profiles, brightness, viewing conditions, and rendering environments can affect how colors appear.

Developers often need to extract RGB channels from a HEX color when building image editors, color pickers, canvas applications, chart generators, gradients, visualization tools, and other interactive interfaces.

A HEX value can be divided into its three channel pairs and each pair converted from hexadecimal to decimal.

HEX: #3366CC

RR = 33
GG = 66
BB = CC

RGB = 51, 102, 204

Once these values are available, JavaScript can use them for dynamic CSS, canvas operations, image processing, or other application logic.

Converting a color from HEX to RGB does not itself determine whether the color combination is accessible. Accessibility depends on how colors are used together, particularly for text and backgrounds.

After obtaining RGB values, you can use the colors with an appropriate contrast calculation or accessibility workflow.

Use our Color Contrast Checker for traditional contrast analysis and our APCA Contrast Checker for APCA-based analysis.

For professional accessibility work, also consult the W3C Web Accessibility Guidelines.