Color has always been my biggest struggle as a quilter. I don't like classes that set out a long list of random rules based on the teacher's personal taste, but I do like to learn about color theory so I can make informed choices when picking colors for my quilts. This is
the best lesson, hands down, I've ever seen for learning about basic color theory and it's FREE.
Here's the link for his
Understanding Color video:
https://www.youtube.com/watch?v=Qj1FK8n7WgY
Please note that the instructor is a 3D Graphics Artist, not a quilter, so there are no examples with fabric. That said, the information is almost all equally applicable to quilting. He talks about the different color schemes (monochromatic, analogous, triadic, complementary, split & double complementary), as well as how saturation & value impact how art looks & "feels". What I really loved was that he talked about the importance of saturation & value of each color within a particular scheme.
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The same instructor also put out a video called
Understanding Composition:
https://www.youtube.com/watch?v=O8i7OKbWmRM
In this video he addresses how to achieve balance, structure & a focal element using various techniques. He explains when different techniques are most appropriate -- for example, symmetry can be great for architectural designs, whereas the Golden Ratio works well for landscape/nature designs as each of those reflects their respective real-world counterparts.
I just can't say enough positive things about this teacher! I really learned a lot from his videos.