Color Systems: CMYK, PANTONE, RGB and RAL explained

CMYK, Pantone, RGB, and RAL are four distinct color systems. Each color system has its own unique usage, with CMYK for print, RGB for on-screen like web, Pantone for accuracy or calibration, and RAL being used in powder coating and plastics. By understanding color systems, you can achieve consistency for your product design across printed materials, digital experiences, and even production, like the coating of a classic single speed bicycle.

Why Different Color Systems?

I think it’s not a secret when I say that color can greatly impact your business’ branding. It’s an element that shouldn’t be underestimated or even overlooked. Color plays an important role in keeping all your marketing materials looking sharp and consistent across print, web, and production. However, many companies fail to reach this consistency because they don’t understand how to use colors across different mediums.

Whether you are designing for print or web, using the right color or color combination is crucial for establishing a strong message, connecting better with your target audience, and eventually improving your brand recognition. However, it is important to understand that the process of picking colors can be a bit complex, considering that colors can look completely different across print and on-screen - even between two screens, color can appear different.

There are four main color systems in the massive world of print and on-screen design: CMYK, Pantone, RGB, and RAL. Knowing the differences between these color systems can help you choose the best option for the type of design you are working with. It can be the difference between a perfect final design and something that looks completely different from what was expected.

Below, I provide a simple explanation of the color systems mentioned and an overview of the main differences between them. This post aims to give you a better understanding of the main color systems for you to keep your color choices as consistent as possible across all product design materials.

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CMYK for Print

CMYK stands for the four colors applied during the printing process: Cyan, Magenta, Yellow, and Black (key). This is a subtractive color system, which means that the ink must be removed to obtain lighter colors. With the CMYK color system, the goal is to use ink to absorb the light reflected on a white background - in this case, it' is the printer paper. This also means that when all colors are combined, all light is absorbed and will appear black.

The CMYK color system is mostly used with print design work like magazines or books. Nowadays, most at-home printers and high-end color laser printers use these 4 colored inks to print texts and images. It is also important to mention that because of this process of using ink instead of light, CMYK colors are usually less vibrant than RGB color.

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PANTONE for Color Accuracy

The Pantone Matching System (PMS) revolutionized the printing color process by providing a standardized system. This system is widely used on most printers to replicate tones and graphics through a standardized guideline. The guideline ensures that any manufacturer can refer to any color and be able to match on print.

PANTONE varies from CMYK in that it doesn’t require a combination of various colors; instead, PANTONE colors are defined as singular units. The majority of Pantone colors are generated with thirteen base pigments that create a variety of unique colors. Each unique color is then labeled via a number, which makes it easy to avoid color inconsistencies. Currently, the Pantone colors palette includes a total of over 1,800 different colors.

This numeric system creates a more accurate color match than other systems, making it perfect for brand identity work. Although using this process can be extremely time and money consuming, it’s perfect for a 1 or 2 color print job (i.e., business card…) because it requires less ink that the 4-color model (CMYK).

Pantone is known worldwide as the standard language for color communication in the printing world. The system was initially designed for the graphics industry, but it has also proven useful across a surprising range of industries.

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RGB for Web & Screen

The RGB color model is one of the most important and recognizable systems for color in digital media. This color system uses a series of numbers from 0-255, and it’s based on the three primary colors, which then form all the other colors: Red, Green, and Blue.

While the CMYK color system is subtractive, RGB is a light additive color model, and colors are added together to create lighter colors. The system starts with Black (screen), then adds the variations of Red, Green, and Blue lights to create colors, and when all the lights are combined, the result is White.

Most digital images and graphics are produced using the RGB color system in which each pixel on a computer screen display represents a certain color. However, it’s important to understand that each computer monitor has a specific color profile, making it difficult to pin down how colors are displayed.

Although there is CSS syntax to define RGB colors, most developers use a hexadecimal (HEX) code, which is basically a shorter and easier version to work with. The code replaces the 0-255 series, and it changes to a six-digit combination of letters (A to F) and numbers (0 to 9). In most programs, the HEX number is automatically generated.

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RAL Colors for Coatings

The RAL color system defines matte, glossy, and metallic surface colors. RAL is the baseline for coatings. For specific coatings like automotive, other systems are more used, typically vendor-specific color systems from the likes of PPG or Glasurit. It all boils down to achieving consistency in the coating of, for example, classic bicycles.

The RAL color system is used mainly for powder coating, varnish, and plastic coloring. It is the go-to system when you’re designing physical products that need to be coated. When talking about RAL colors, it is the RAL classic system we are referring to.

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