Case #1: I plan to make the cardigan Oranje and wanted to replicate the colors that I saw in this picture on Ravelry - click here. When I look at this sweater I see a blend of terracotta, sky/turquoise blue and an off-white leaning towards light yellow. I ordered exactly the same colors and they turned out to be much more brown, navy blue and light yellow with hints of pink.
Case #2: I like the cardigan Miss Lemon that I spotted on Ravelry. It's a lovely and practical design and I ordered it as soon as I saw it.
The color in the picture is called Strange Harvest. I went to the Dream in Color Smooshy to look at the color card and Strange Harvest looks like this:
The difference is quite dramatic. I would call the color in the sweater picture to be in the green family with a touch of yellow. The one on the skein appears more orange to brown.
Don't get me wrong. I love Smooshy yarn, but it's one yarn that I'll buy in person from now on if I'm looking for a specific shade or color. I don't understand why the color can look one way on a garment and very differently on the online color page. All colors are lovely, but if I'm looking for a specific shade, I'll buy it in person. I haven't decided on a color for my Miss Lemon cardigan but I'll be going to a LOT of yarn stores during the yarn crawl in Denver in September. I'm sure that I'll find something that "speaks to me" and I expect I'll be buying one of Dream in Color Smooshy's pretty shades for my Miss Lemon cardigan.