What’s cool? Color and Contrast.com
Tell me more!
A comprehensive guide for exploring and learning about the theory, science, and perception of color and contrast.
This website is for designers to learn about color, contrast, and how it can affect experiences of a user interface. It provides quick access to relevant information at any point in the design process.
The content is thorough, but concise, and provides contextual insight to assist you in making educated decisions about color and contrast.
Where is it?: Color & Contrast
This is one among many items I regularly tag in Pinboard as cooltech, and automatically autoshares as #cogdogcooltech to Twitter and Mastodon. Now the Coolness is in OEG Connect 
Have you ever been to Cool? Do you know of something cool I should share? Just reply below and I will check it out.