This is my area of interest! I went to House of Colour about two years ago to get my colours done. It was expensive, not much less than £200, but in my opinion, worth every penny!!
It's fantastic now knowing what colours suit me, most of which I would NEVER have worn before. I'm pale with dark brown hair and blue eyes and am an autumn. I would never have worn teal, rust or dark olive as assumed they would wash me out, but now I love them!
Sounds cheesy, but it does actually make you feel more confident and happy (honestly!) wearing the colours you look best in. A colleague at work actually said 'What have you done?' As he could see the change in me.
My mum, who is 80, had it done at the same time, when she wears her best colours her whole face lights up, she looks younger, hair nicer colour and skin creamy.
Also, it's not just clothes, they advise you what colour your hair should be, makeup bits, glasses, accessories, shoes. If you stick to these then in theory all your wardrobe goes together, too. It takes the best part of the day.
It is expensive, but if you can afford it, go for it! Lifetime investment.