Like geographic coordinates – longitude, latitude, and altitude – L*a*b* color values give us a way to locate and communicate colors. What’s the history of L*a*b*? In the 1940’s, Richard Hunter introduced a tri-stimulus model, Lab, which is scaled to achieve near uniform spacing of perceived color differences. While Hunter’s Lab was adopted as the de facto model for plotting absolute color coordinates and differences between colors, it was never formally accepted as...
To understand how color management works, you need a basic knowledge of the additive and subtractive systems of color reproduction. Both use a small number of primary colors that combine to produce a large number – or gamut – of colors… but the way they do that is quite different. In our Color Perception Part 1: The Effect of Light post, we explained how the visible color spectrum (we know it as the rainbow) encompasses light wavelengths from approximately 380 to 720 nm. By breaking the visible...
When it comes to the way we see color, our eyes can be deceived. This is partially caused by our humble brain, which is managing vast amount of information and processing it the best it can. It can also be related to genetics and the environment; we all see color a little differently. But above all, LIGHT has biggest impact on the colors we see. Without getting too technical, here is an introduction to the way light affects our perception of color. RGB Color Circle The temperature of lig...
Color 2018 was a huge success for connecting the dots, breaking down silos, and learning how to gain control of an integrated color management workflow. It offered in-depth sessions including Brand & Design, Print & Production, Standards & Business, and Vendor/Product Demonstrations. I was there to share tips and advice about how closed-loop color control can help you keep up with color. Here are some of the key takeaways. What is closed-loop color control? Closed-loop color can me...
Warm weather is just around the corner and spring is in the air! Fluffy yellow chicks… Delicate pink tulips… Soft green sprouts poking through the ground… And, of course, spring M&M'S®! Advertisers target our springtime emotions through pastel colors. Pastels have a calming effect, and everywhere you look companies are using them to feed our desire to feel a bit of spring. Today we’ll take a look at the psychology of color, how marke...
To control color, you need to be able to compare very small differences, determine their impact and understand how to address that impact. In this series we’ve already looked at the history of color analysis and the role of light in tolerancing. Today we’ll discuss the difference between a color space and a color tolerance and introduce the most common methods. Color Spaces A color space gives us a way to communicate color. Just like we can find any location on planet earth using lo...
When customers are just getting started with color management, they often ask, "What is the difference between a spectrometer and a spectrophotometer?". With such a minute spelling difference, it's easy to make a quick typo and get the wrong answer for this color question. So...what's the difference? Spectrometers vs. Spectrophotometers What is a Spectrophotometer? A spectrophotometer is a color measurement device that is used to capture and evaluate color on just about anything, in...
Have you ever bought something at the store, only to return home and realize it doesn’t match anything in your house? It’s not the color that changed. It’s the way you perceived it. To control color, you need to be able to compare very small differences, determine their impact and understand how to address that impact. In this three-part series, we’re looking at the key components of tolerancing. If you missed part one, The History of Color Analysis, check it out now. T...
To control color, you need to be able to compare very small differences, determine their impact, and understand how to address that impact. But words alone can’t give us enough information to precisely describe colors, or the difference between them. In this three-part series we will look at the color science behind tolerancing – the color analysis that paved the way, the role of light, and the difference between a color space and a color model – so you can make ...
Surface appearance can change your perception of color. Think of a glossy magazine. If the light is shining directly on the page, you may need to tilt the magazine and change the reflection angle to clearly see the colors. Likewise, a textured surface may appear to be a different color than a smooth surface of the same object. Since spectrophotometers determine a color’s spectral values by shining light onto the surface and measuring the reflectance, choosing the right instrument and the...