She has consulted with the Stanford University Visualization Group on a color suggestion prototype system, the Center for Visualization at the University of California at Davis and the Scientific Computing and Imaging Institute at the University of Utah on applying color theory to ensemble data visualization. Theresa-Marie Rhyne is an expert in the field of computer-generated visualization and a consultant who specializes in applying artistic color theories to visualization and digital media. If you would like to explore this topic further, please examine Chapter 4: Defining Color Harmony of my book on, “Applying Color Theory to Digital Media and Visualization” from CRC Press. There are many other color harmonies that can be explored and applied to color selection. We highlighted the complementary and analogous color harmonies and demonstrated a visual analytics example for each case. We then demonstrated how each color on the wheel has a logical relationship to all other colors to create color harmony. In this short discussion, we have shown how to build a color wheel from the Munsell color order system. We apply the 5G and 5RP complementary harmony to a visual analytics example of a three-dimensional stacked area chart in Figure #2.įigure #3: The Munsell Analogous color harmony of 5B, 5BG and 5G applied to a three-dimensional bar chart Summary Combining 5G with 5RP results in the 5N neutral Gray color at the center of the Munsell hue wheel shown in Figure #1. For 5G (Green), the complementary color in Munsell notation would be 5RP (Red Purple). Two colors on opposite sides of the hue wheel are called complementary colors. We will describe each of these color harmonies with visual analytics examples below. Three colors adjacent to each other are defined as analogous color harmony. Two colors on opposite sides of the hue wheel are called a complementary color harmony. As we noted previously, this concept is called color harmony. This is depicted on the color wheel in Figure #1. The Munsell color notation system is designed so that each color has a logical relationship to all other colors. Two Color Harmony Types with Visual Analytics Examples We depict the Munsell hue circle or color wheel below in Figure #1.įigure #1: The Munsell hue wheel divided into forty circle divisions. In Munsell notation, Orange is defined as Yellow Red. This notation concept results in forty standard hue circle divisions. 10Y is the end point of the Yellow segment, positioned equally between the primary Yellow (5Y) and intermediate Green Yellow (5GY). 2.5Y indicates yellow progressing toward Yellow Red with 7.5Y transitioning toward Green Yellow. In Munsell notation, primary Yellow is identified as 5Y and is at the midpoint of its segment. Each of the primary and intermediate colors are allocated a range of ten degrees on the color circle and are located at the mid-point of this segment. The color wheel is measured off in one hundred compass points resulting in 100 steps on the hue circle. The intermediate hues are defined as Yellow Red (YR), Green Yellow (GY), Blue Green (BG), Purple Blue (PB), and Red Purple (RP). These principal hues are separated by five intermediate or mixture colors. These principal hues are Red (R), Yellow (Y), Green (G), Blue (B) and Purple (P) and are equally spaced in clockwise order around a color circle or wheel. The Munsell color order system defines hue attributes as actual colors and establishes five principal hues. For our examples, we used the chart functions in Apple Numbers and Apple Pages. The examples shown here are basic infographics or charts that can be generated with software tools like Microsoft Excel or Word, Apple Numbers or Pages, Google Docs, Tableau Software, and many others. We then apply these color harmonies to visual analytics. In this short discussion, we work through two color harmony types: complementary and analogous. These color chords are generalized recommendations with the final color selection dependent on specific parameters associated with the given design project. Similar to concepts in music, there are “color chords” on a color wheel that help to provide common guidelines for how hues will work together. In this blog, we discuss how to create a color wheel using the Munsell color order system and how to apply concepts of the resulting color harmony to developing visual analytics.Ĭolor harmony is the process of choosing colors that work well together in the composition of an image.
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