One of our top contenders for the best blackout curtains that block out all sunlight is the Amazon Basics Darkening Blackout. Overall, it is an affordable and high-quality option that is available in a variety of colors and designs, according to the brand itself and many experts.

These darkening curtains are 100 percent cotton. Even better, it is a triple-weave fabric to create more density. Given the fabric nature, they perform a really good job of insulating spaces for energy efficiency and preventing outside noise. Two panels are also included, along with an optional feature of 1.5-inch rings or rod holes. As per Amazon, these blackout drapes are machine-washable. There are also some complementary Velcro ties to help them back and make the area look neater. Even better, they are manufactured in a secure factory that adheres to the Oeko-TEX standard.

What rooms will suit the Amazon Basics Darkening Blackout best? Thanks to their various and colorful designs, these curtains will be great for areas that need to be changed often, such as children's bedrooms, or for renters.

Ratings: 4.5 stars (from 37,141 reviews)

Price: $36.89

Buy it at: https://www.amazon.com/dp/B07B3XJ7WQ

Ripple Fold Drapery is another high-quality blackout curtain. Many experts recommend it if you want an undisturbed and good sleep. In fact, it is also quite popular on many review websites, with an exceptionally high rating score of almost 5 stars. It is not an exaggeration to claim that Ripple Fold Drapery is among the best blackout curtains that block out all sunlight.

Of course, to purchase this product, we suggest that you have some extra bucks in your budget. If you do not mind the somewhat high price, then we are confident to tell you that the Ripple Fold Drapery is a terrific resource for customization purposes to suit any area in your house! With over eight drapery types and over 650 fabric options, you can build almost any form of blackout curtains you choose. This curtain will suit any area, from children's bedrooms, living rooms, kitchens, and even bathrooms!

Ratings: 4.99 stars (from 29,800 reviews)

Price: $396

Buy it at: https://www.theshadestore.com/drapery/custom-drapes/ripple-fold-drapery

Pony Dance Blackout curtains are one of the best options if you want to find a blackout curtain that is both functional, effective, and stylish. One of the most wonderful features of the Pony Dance Blackout curtains is their diverse array of styles. Indeed, these polyester panels are available in ten traditional colors and three common sizes: 52 inches by 45 inches, 52 inches by 54 inches, and 52 inches by 72 inches.

Even though the most common and favored palette runs from black to pristine white, the designer of these curtains still suggests deeper hues for optimal light-blocking capabilities. You may expect 85 to 95% light blocking- and a substantial reduction in ambient noise - with these hues! Out of all colors, we believe the navy blue drapes that we examined offered the best level of light blocking.

Even better, the rod pockets' structure is flexible, allowing the curtain to be hung either directly on the pole or using curtain clips. One small downside is that such a layout does make these curtains more difficult to install than other versions with grommets.

Ratings: 4.6 stars (from 14,434 reviews)

Price: $29.95

Buy it at: https://www.amazon.com/dp/B072LC8VLW

It is true that Sun Zero Oslo darkening curtains are inexpensive. Nevertheless, due to the high-quality material, they still give off a very luxurious feel. These blackout curtains are constructed of a classy fabric that resembles velvet.

Furthermore, they come in a huge number of bright and dark hues that all provide great light-blocking, along with an energy-efficient layout that claims to cut energy loss by as much as 50 percent (and reduce noises by as much as 35 percent) And since nothing can enter the Sun Zero Oslo grommets, this rod-pocket design helps to block all unnecessary lighting sources.

The only thing that you should pay attention to is the instruction compartments: both ends of the curtain featured compartments that could take a curtain rod, making it unclear which side is the peak and which lies at the bottom. But once you have got over the setup procedure, everything is a breeze afterward! We strongly suggest these curtains for a streamlined and stylish look for your room (and, of course, for an undisturbed sleep!)

Ratings: 4.7 stars (from 1917 reviews)

Price: $19.98

Buy it at: https://www.amazon.com/dp/B07NDZ29DM

Pottery Barn Kids is not an unfamiliar brand to most of us. This brand has always been known to provide the best product lines in almost anything fabric-related, from clothes, and pajamas to curtains. And if you want a pitch-black room for healthy and undisturbed sleep, we will, of course, recommend Pottery Barn Kids to you. Among some of its most popular variants, we believe the Pottery Barn Kids Evelyn Linen Blackout will be the most optimal choice.

Indeed, Pottery Barn Kids provides high-quality blackout curtain solutions to all types of settings, mostly for nurseries and children's rooms. According to experts, Pottery Barn Kids Evelyn Linen Blackout has established a high standard for the design of blackout shades - by supplying an abundance of distinctive and fashionable curtains in a variety of colors.

Furthermore, this cotton weave drape with a four-in-one top finish is also hailed as the crowd's favorite for years, allowing you to choose between clip rings, belt loops, pole pockets, or drapery rings based on the style you like. And in case you are searching for gender-neutral solutions, no worry; such products are also accessible, enjoying a basic pleat pattern!

Ratings: 4.5 stars (from 1100 reviews)

Price: $70.99 – $139

Buy it at: https://www.potterybarnkids.com/products/evelyn-linen-blackout-panel/