About a year ago, we published a blog post framed as a letter to NASA, asking them to stop using rainbow color scales. The post was written out of a general frustration with rainbow color scales, but especially out of seeing field experts and leaders, like NASA, using a perceptually incorrect color scale. We weren’t alone. Robert Simmon from NASA’s Earth Observatory has been crusading for the same changes. He’s made great progress, and as a continuation of that, he’s responding to our “letter” with a brilliant series of blog posts on proper use of colors and color scales.
Know what makes a good palette for visualization, how to find and apply good examples, or create one from scratch? In my mind, the best place to start is Color Brewer. Cynthia Brewer’s tool is popular for a reason: it explains the theory behind... keep reading