Take this fun, fast color test we created. After you take the test, look at the 34 second video below on color mixing (what is "additive" and "subtractive"). Then click here to read Design to Quilt: Elements of Design-Working with Complementary Color (Week 16).
If your design is going to be viewed on a monitor, tv, cell phone, iPad (all with lighting within the screen), you use the RGB red, green, blue color wheel---the color wheel of light (additive). If your design is going to be on paper, plastic, fabric etc (a surface) then you use the CMY cyan, magenta, yellow color wheel (subtractive).
Joen Wolfrom's Ultimate 3-in-1 Color Tool has the formulas for both the CMY and RGB colors for each swatch. If you're a web designer, you'd Choose the RGB formulas. If you are dying fabric, you choose the CMY formula. Get the Ultimate 3-in-1 Color Tool here:
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