What to do when you have found your personal color palette, but the fashion industry won't cooperate with you, and you can't find clothing in the right colors?
Carole Jackson in her book Color Me Beautiful said you have to have a long-term plan, so you can slowly fill it, and can buy clothes when your colors are trendy. They will be, sooner or later.
That the high fashion trends aren't your style doesn't much matter, because there will always be classic cut clothes available. When it comes to your basic wardrobe, the items should be classic, so that you can wear the same blazer or pants for decades. Most capsule wardrobes are based on the idea that you can buy only a few special items every year that keep you fashionable. I mean, the fashion jeans in the 70s were flared, but straight-leg jeans were available. You could wear the same straight jeans from the 1950s to the 2020s, just changing accessories and tops, and be fashionable.
Also, the classic cut clothes are usually also better quality.
Carole also says that you need to shop, not for clothes, but purchasers :-D If you find a purchaser who has your coloring, you have struck gold. They will have access to much more than you do, and they will find the items in your colors, and take them into the store, even when the colors might not be trendy right then. Especially if you befriend them. You can also get tips on where to find clothes in the right coloring if you can't find them in her store.
That's another thing one can do, find social media groups of people who share your coloring. They can share where they find the clothes of right colors, and tip you about designers and stores you might not know otherwise.
Another great tip is to find a seamstress who can sew your clothes in the colors and materials you want. The price won't be that much higher, and in some cases, it will be lower. Nevertheless, it's very much worth it. The clothes will be perfect for you AND you will be supporting small, local entrepreneurs and craftspeople.
You can always learn to sew and knit and make your own clothes. It's very intimidating, but it's not difficult.
You can always dye the clothes. Choose white clothes to dye, or clothes with the "right" undertone. Light blue for cool colors, light yellow for warm colors, because the undertone will always come through. If you are a Spring, don't dye grey clothes and believe to get anything but muted Summer colors. If you are a Winter, don't dye clothes with warm colors, like yellow, orange, tan, or beige, because the results will be Autumn colors.
Now, until you find the right colors, you will have to do with the wrong ones. Also, it's expensive to change the whole wardrobe at once. Especially when you are to invest in good quality clothes. (Though you might not care about that. Not all do.) The good news is that clothes wear down, and eventually you have to buy a new one, and when you know which colors and styles fit you best, you can buy something that will serve you longer and better. (Yes, I know, there are people who take so good care of their clothes that they are still wearing the things they bought decades ago.)
You can save a lot with a scarf in the right colors closest to your face. Pants, skirts, and shoes don't matter that much, as they are away from your face, but tops can be difficult. Now, if you know how to knit, you can knit yourself tops in the right coloring (even if it's just a vest). You can get simple tops in white (like T-shirts and button-down shirts) and wear them with the right colored scarves and tops.
This is Kate Bosworth, and she's usually classified as Light Spring. The dark, soft green doesn't fit her that well, but let's say she is not Kate, but just an ordinary girl, who bought the top because it's cute and the color works so well on her Summer friend who has about the same coloring as she does. Something as little as jewelry in the right color saves the top. You can help the color a bit by choosing the jewelry or scarf in the same color family - Summer green top, Spring green accessories.
(Also, I find it interesting that it's the same photo - the only thing that differs the two is the color of the jewelry... and I think Kate on the left has brighter hair color, brighter eyes, even thinner arms :-D)