There are so many good tools to help you choose good colors to use in your data visualization, presentation or infographic design! These are just a few of the color tools that I have found, and had a chance to try.
Paletton is a powerfull tool to create color combinations and palettes of colors that work together well. The major advantage of Paletton is it's not using the modern computer and engineering RGB color space, but it's built on a classical artistic color wheel, applies classical color theory and works within a specially created RYB color space. Therefore the color combinations it produces are very different from those you can get in many computer graphic applications.
Use your mobile device as a vector converter to turn photos into color themes, patterns, type, materials, brushes, and shapes. Then bring those assets into your favorite desktop and mobile apps — including Adobe Photoshop, Illustrator, Dimension, XD, and Photoshop Sketch — to use in all your creative projects.
Use the free Color Calculator from Sessions College for Professional Design to explore creative color options for your design project. Simply pick your base color(s), choose a color harmony, tweak/explore as needed, and see results. You’ll get a report of the hex, RGB, and CMYK color values for your project and see your colors applied to design samples. Share or print, rinse and repeat.
Color Gradients Explorer lets you calculate the exact color profiles for a multi-step gradient after you define the starting and ending colors.
The Colour Contrast Analyser (CCA) is a desktop application for Windows & Mac that helps you determine the legibility of text and the contrast of visual elements, such as graphical controls and visual indicators.
COLOURlovers is a creative community where people from around the world create and share colors, palettes and patterns, discuss the latest trends and explore colorful articles... All in the spirit of love.
Enter the URL of an image to get a color palette that matches the image. This is useful for coming up with a website color scheme that matches a stock photo a client wants to work with.
Use the HTML Color Pickerright to select a pixel from an image and get the html Color Code of this pixel. You also get the HEX value, RGB value and HSV value. You can enter a picture url or upload your own image.