Color Hex Code

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What is a Color Hex Code?

A color hex code is a way of representing colors in a format that computers can understand and display. It is used widely in web design, graphic design, and various digital applications.


The “hex” in hex code stands for hexadecimal, a base-16 numbering system that uses sixteen symbols: 0-9 and A-F. This system allows for over 16 million possible color combinations, making it a very powerful tool for designers.

The color hex code is typically a six-digit code following a hash symbol (#). Each pair of digits represents the intensity of red, green, and blue in the color, respectively.

Color hex codes allow designers and developers to specify exact colors for website elements, graphics, and user interfaces. Even free website builders use color hex codes.

This precision is important for maintaining brand identity, creating visually appealing designs, and improving user experience (UX).

So, what is the color hex code meaning? It means flexibility and precision in your digital design.

Key Takeaways

  • A color hex code is a six-digit code used to represent colors in digital design, combining numbers and letters.
  • There are 16,777,216 possible color combinations.
  • Hex code format is structured as #RRGGBB, with each pair of digits representing the intensity of red, green, and blue.
  • Hex codes are widely recognized and supported by web browsers, graphic design software, and digital tools.
  • It’s easy to use hex codes in CSS, making it simple to define colors.
  • While hex codes are ideal for digital design, other systems like HSL, CMYK, and LAB offer benefits for specific applications such as printing and color manipulation.

History of Color Hex Code

The origin of the hex color code system dates back to the early days of computer graphics. As computer screens evolved from simple black-and-white displays to more complex color displays, there was a need for a standardized method to define colors.

The hexadecimal system, already used in computing for memory addressing and other purposes, proved to be an efficient solution. It was adopted for color representation in HTML and CSS, becoming a fundamental aspect of web design.

How Do Color Hex Codes Work?

Hex color codes are a way of representing colors using hexadecimal notation, which is a base-16 numbering system. A hex color code is a six-digit code that follows a hash symbol (#), such as #FF5733.

Each pair of digits in the code represents the intensity of one of the primary colors: red, green, and blue.

Structure of Hex Color Codes

A hex color code is structured as follows:

  • The first two digits represent the red component.
  • The next two digits represent the green component.
  • The last two digits represent the blue component.

For example, in the hex code #FF5733:

  • FF indicates the red intensity.
  • 57 indicates the green intensity.
  • 33 indicates the blue intensity.

Explanation of Hexadecimal Notation

The hexadecimal notation uses sixteen symbols: 0-9 and A-F. In this system:

  • The numbers 0-9 represent values zero through nine.
  • The letters A-F represent values ten through fifteen.

This allows each pair of hex digits to represent any value from 00 to FF, which corresponds to the decimal range of 0 to 255. This wide range allows for over 16 million possible color combinations (256 x 256 x 256).

Conversion from RGB to Hex

RGB values, which range from 0 to 255 for each color, can be converted to hex by following these steps:

  1. Take the decimal value of the red, green, and blue components.
  2. Convert each value to its hexadecimal equivalent.
  3. Combine the hex values into a single hex code.

For example, to convert the RGB value (255, 87, 51) to a hex code:

  • The red value 255 converts to FF.
  • The green value 87 converts to 57.
  • The blue value 51 converts to 33

So, the RGB value (255, 87, 51) is represented as the hex code #FF5733.

How Many Hex Colors Are There?

Hex color codes allow for a massive number of color combinations.

A hex color code consists of six digits, with each digit ranging from 0 to F in hexadecimal notation. This allows for 16×16×16×16×16×16=16,777,216 possible color combinations, each representing a unique color.

How to Use Hex Color Codes

In web design, hex color codes are used to define the colors of various elements on a web page. This includes background colors, text colors, borders, and more. By using hex codes, designers ensure that the colors appear consistently across different browsers and devices .

Graphic design software, such as Adobe Photoshop and Illustrator, allows designers to use hex color codes to select precise colors. When working on digital artwork, designers can enter hex codes to apply exact colors to shapes, text, and other elements. This is particularly useful when matching brand colors or ensuring consistency across multiple projects.

Hex color codes are commonly used in Cascading Style Sheets (CSS) to style HTML elements.

Here’s how you can integrate hex codes in your CSS:

Background Color

Color Hex Code - Background Color

Text Color

Color Hex Code - Text Color

Border Color

Color Hex Code - Border Color

Hex vs. RGB


Hex Color Model: Uses hexadecimal values (0-9, A-F)

RGB Color Model: Uses decimal values (0-255)

Hex Color Model: #RRGGBB (e.g., #FF5733)

RGB Color Model: rgb(R, G, B) (e.g., rgb(255, 87, 51))

Hex Color Model: Compact and widely recognized

RGB Color Model: More intuitive for understanding the color mix

Hex Color Model: Common in web design and CSS

RGB Color Model: Common in graphic design and CSS

How to Read Hex Color Codes

A hex color code is a six-character code that starts with a hash symbol (#). The code is structured as follows: #RRGGBB.

  • RR: Represents the red component. For example, FF means full red intensity, while 00 means no red.
  • GG: Represents the green component. For example, 80 represents a medium green intensity.
  • BB: Represents the blue component. For example, 33 indicates a low blue intensity.

Each pair of characters (RR, GG, BB) uses hexadecimal notation, which includes numbers (0-9) and letters (A-F). The values range from 00 to FF, with 00 being the lowest intensity and FF being the highest.

If you need to know how to get the hex code of a color you’re already using, use an image editing tool or a web-based color picker to grab it.

Hex Code Examples

Here are some common hex codes and examples of hex codes for various colors:

Hex Code Examples

Color Hex Code Pros and Cons

As with everything, there are some pros and cons to using the color hex code system.


  • Precision
  • Compact format
  • Widely supported
  • Ease of use in CSS


  • Less intuitive
  • Limited to RGB
  • No alpha channel
  • Potential for errors

Other Color Systems

While hex color codes are widely used in digital design, other color systems serve different purposes.

The Hue, Saturation, Lightness (HSL) system, for instance, represents colors based on hue, saturation, and lightness. It provides a more intuitive way to adjust colors compared to hex or RGB, making it popular in graphic design and web development.

Cyan, Magenta, Yellow, Key/Black (CMYK) is a subtractive color model used in printing. Unlike hex codes, which are for digital screens, CMYK is important for print design, as it accurately represents the ink colors used in printers.

RGB is an additive color model used for digital displays, where colors are created by combining different intensities of red, green, and blue light. Hex codes are a compact representation of RGB values, often preferred in CSS for their brevity.

Another system, LAB (CIE Lab*), is designed to be device-independent, ensuring consistent color representation across different media. While more complex than hex codes, LAB is important in professional color correction and digital imaging for its accurate representation of human vision.

Each color system has its own strengths, with hex codes being ideal for digital design and others like CMYK and LAB offering benefits for printing and color accuracy across devices.

The Bottom Line

The color hex code definition is a six-character code used to represent colors in digital design. It consists of three pairs of characters, each pair representing the intensity of red, green, and blue (RGB) in the color. The characters can be numbers (0-9) or letters (A-F), which correspond to values from 0 to 255 in the decimal system.

Hex codes are widely supported in web development and graphic design software, making them an essential part of creating visually appealing and accurate digital content.

One of the key advantages of hex color codes is their compact format, which makes them easy to use and understand in CSS and other design applications. While they are limited to the RGB color model and can be less intuitive than other systems like HSL or LAB, hex codes remain a go-to choice for digital designers due to their simplicity and reliability.


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Marshall Gunnell
IT & Cybersecurity Expert
Marshall Gunnell
IT & Cybersecurity Expert

Marshall, a Mississippi native, is a dedicated expert in IT and cybersecurity with over a decade of experience. Along Techopedia, his bylines can be found on Business Insider, PCWorld, VGKAMI, How-To Geek, and Zapier. His articles have reached a massive readership of over 100 million people. Marshall previously served as the Chief Marketing Officer (CMO) and technical staff writer at StorageReview, providing comprehensive news coverage and detailed product reviews on storage arrays, hard drives, SSDs, and more. He also developed sales strategies based on regional and global market research to identify and create new project initiatives.  Currently, Marshall resides in…