People like Menz start talking about hue and saturation and primary and - well, isn't there an easier way of finding out if you can knit purple and yellow together?
Kaffe Fassett said the only thing I've ever taken to happily about colour...if you knit two or three or four colours together, they have to match. A mistake is a disaster. Knit twenty-five or thirty colours together and nothing can go wrong. Brilliant! And intuitively easy to understand.
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