This one is actually pretty easy.
You’ve got multiple colors in the dress, so unless you end up with Dancing With the Stars-type heeled sandals in ALL the colors of that dress, you’re not going to be “matchy” regardless of what you pick.
The color and style that you DO pick is entirely based on where you’re going and what type of image you want to present.
Here is a short (not exhaustive, and most certainly regionally-variable) list of options and what they say about you:
Metallic flat sandals (silver or copper/bronze would go best with that dress): free spirit, most likely shopping or wandering around, most likely daytime between 9:00-4:00. Do not wear after age 50.
Metallic heeled sandals: free spirit, partying or bar-hopping with friends. If it’s before 4 pm, you’re a bit of a show-off, if it’s after 4 pm, you’re just having a good time. Do not wear after age 50.
Black flats: sensible person, possibly works on feet all day, a little behind the trends (flats are on their way out now). More common during the day, very casual if worn at dinner.
Black pumps: sensible person, most likely wears the same few shoes with everything. Totally forgettable. Most conservative choice. Standard for dinner, church, “cultural” events, or fancy parties where people stand around with little shrimp things and say catty things between courses of champagne flutes.
Black strappy or buckly or trendy things: Trend-follower, but not too overboard about it. Good balance between fun shoe style and basic black to tone it down. Possibility of being noted for very stylish or very out-of-style shoe, so potentially dangerous choice. More likely for parties or less formal events. Very overdone for daytime.
Bright colors: Go with the brighter purple or the lighter blue, and add the following description to whatever one is on the shoe style: you’re a flashy person who either really likes shoes and has a lot of them, or one of those people who buys shoes specifically to GO with an outfit. The second option is currently seen as the sign of a less-fashionable or less-confident person.
Please don’t wear magenta or lime green shoes. Ever. Thank you.
For general advice, don’t wear more than one article of clothing of any exact color. To be safe, if you buy it all together in the store as an outfit, NEVER wear it all together.
THIS is what I’m talking about. Just NO. That is what Matchy Matchy is referring to. All she needs is some orange bangle bracelets and some orange earrings, and she’s set to go.
If you happened to buy that travesty of a pantsuit, here’s what you SHOULD do to create a few outfits that are fashionable, not matchy travesties:
Pair the orange blazer with a dark rust or moss green skirt, and a really dark tan shell or cami under the jacket. Wear shoes that complement the darkest thing you’re wearing (probably the pants/skirt).
Complement means pick a darker or lighter version of the color, or another color that goes well with it - like if you’re wearing a green skirt, brown or tan shoes would be appropriate, as would dark green ones.
On another day, you can pair the orange shell (the shirt) with a brown, tan, or cream (not white!) jacket, some khakis, and boat shoes.
Finally, you can take the pants out and shoot them. If you insisted on wearing orange pants, I would put them with a really long chocolate brown structured jacket, probably tunic-length to get rid of as much orange as I could. A fantastic rust and orange hat, and I’d give you some killer dark brown shoes and a really light cream top to balance all that orange on your legs, and give you about three shots of espresso to help you compete with your outfit.
See how each of those are using colors that “go” with each other, rather than matching each other? That’s the idea for everything.