Free Shipping
Price Match
Easy Returns
Licensed Opticians
The Ray-Ban RB6421 eyeglasses bring a fresh take on metal frames with their distinctive two-tone construction and modern square shape. These full-rim frames feature a striking contrast between the bold upper brow bar and the sleek lower rim, creating visual depth that sets them apart from standard metal eyeglasses. Available in sophisticated color combinations like silver on matte black, pink gold on havana, and silver on grey, the RB6421 offers a refined look that works equally well in professional settings or casual wear.
Lightweight Metal Construction
Built entirely from durable stainless steel, these frames deliver the strength you need for daily wear without the weight. The metal construction keeps the RB6421 light on your face while maintaining structural integrity. Adjustable nose pads ensure a customized, comfortable fit that adapts to your unique facial features—a key advantage over plastic frames with fixed nose bridges. The sculpted temples feature the engraved Ray-Ban logo and taper to a slim profile for all-day comfort.
Prescription-Ready & Versatile
The RB6421 is fully prescription-ready and compatible with single vision, progressive, and bifocal lenses. The square lens shape (available in 52mm, 54mm, and 56mm eye sizes) suits a wide range of face shapes, particularly oval, round, and heart-shaped faces. The 18mm bridge and temple lengths of 140mm, 145mm, or 150mm (depending on lens size) provide a balanced, medium fit for most adults. Whether you need everyday readers, computer glasses with blue light filtering, or Transitions lenses, this frame accommodates your vision needs.
Product Details
Product DetailsModel
0RX6421Shape
Gender
Material
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsFrame Color
SilverColor Code
2997Color Description
Silver/Matte Black
Frame Color
PinkColor Code
3001Color Description
Pink Gold/Havana
Frame Color
PinkColor Code
3001Color Description
Pink Gold/Havana
Frame Color
SilverColor Code
3004Color Description
Silver/Grey
Frame Color
SilverColor Code
2997Color Description
Silver/Matte Black
Frame Color
SilverColor Code
3004Color Description
Silver/Grey
Color Code
3041Color Description
Blue
Frame Color
BrownColor Code
2973Color Description
Beige On Copper
Frame Color
BrownColor Code
2973Color Description
Beige On Copper
Frame Color
BlackColor Code
2997Color Description
Black On SilverLens Color
Clear
Color Code
3004Color Description
Grey On SilverLens Color
Clear
Frame Color
BlackColor Code
2904Color Description
Black On BlackLens Color
Clear
Frame Color
BlackColor Code
2904Color Description
Black On BlackLens Color
Clear
Frame Color
GunmetalColor Code
3003Color Description
Bordeaux
Frame Color
BrownColor Code
3040Color Description
Brown
Color Code
2553Color Description
Brushed GunmetalLens Color
Clear
Color Code
2553Color Description
Brushed GunmetalLens Color
Clear
Frame Color
BlackColor Code
2890Color Description
Black & GoldLens Color
Clear
Frame Color
BlackColor Code
2890Color Description
Black & GoldLens Color
Clear
Frame Color
BlackColor Code
2890Color Description
Black & GoldLens Color
Clear
Color Code
2553Color Description
Brushed GunmetalLens Color
Clear
Size Details
Size DetailsLens Width
54mmBridge Width
18mmTemple Length
145mmSize
5418-145
Lens Width
52mmBridge Width
18mmTemple Length
140mmSize
5218-140
Lens Width
54mmBridge Width
18mmTemple Length
145mmSize
5418-145
Lens Width
54mmBridge Width
18mmTemple Length
145mmSize
5418-145
Lens Width
52mmBridge Width
18mmTemple Length
140mmSize
5218-140
Lens Width
52mmBridge Width
18mmTemple Length
140mmSize
5218-140
Size
5418-145
Size
5218-140
Size
5418-145
Bridge Width
18.00Temple Length
150.00Size
5618-150
Bridge Width
18.00Temple Length
150.00Size
5618-150
Bridge Width
18.00Temple Length
145.00Size
5418-145
Bridge Width
18.00Temple Length
150.00Size
5618-150
Lens Width
52mmBridge Width
18mmTemple Length
140mmSize
5218-140
Bridge Width
18.00Temple Length
145.00Size
5418-145
Bridge Width
18.00Temple Length
145.00Size
5418-145
Bridge Width
18.00Temple Length
150.00Size
5618-150
Bridge Width
18.00Temple Length
150.00Size
5618-150
Bridge Width
18.00Temple Length
145.00Size
5418-145
Bridge Width
18.00Temple Length
140.00Size
5218-140
Bridge Width
18.00Temple Length
140.00Size
5218-140
Product was as promised
Exactly what I was looking for. Cheapest price, authentic Ray-Ban frames as described standard delivery time.
I received my glasses in less than two weeks. I absolutely love them. I have Transitions progressive lenses and they are perfect. Thank you, Designer Optics!
Great shopping experience. Accurate rx. Thanks
Everything was fine. Will buy again. Thanks
California Proposition 65 Proposition 65 is a California regulation that requires special warnings to be presented to customers if a product contains certain quantities of chemicals or toxicants known to the State of California to cause cancer, birth defects, or other reproductive harm. The following warning applies to the products linking to this page:
WARNING: Reproductive Harm – https://www.p65warnings.ca.gov/Free Shipping within the contiguous US only (excluding Hawaii and Alaska) on all Orders over $100.
At DesignerOptics.com we are committed to the highest quality of service.
We ship products to all 50 US states as well as to many other countries around the world. We take all the measures to ship our items in a timely manner, directly to your door, almost anywhere in the world.
In stock products usually ship within two business days, but may take up to five business days*. When an order ships you will receive a confirmation email with the tracking information. You can also track your order by logging into your account.
We provide FREE SHIPPING on all orders over $100 We also offer overnight and second day delivery shipping options. Please note that when using next day or second day delivery it still takes 48 to 72 Business hours for the order to be processed.
The Designer Optics Low Price Guarantee is simple:
Designeroptics.com matches the price of all retail competitors and major online retailers.
How it works:
Place the frames in your cart
Before placing your order in add the following the comments box, Add the URL (web address) of the page where you found the lower-priced item,
Your credit card will not be charged until we have confirmed with you by phone or by email that your item qualifies for our Price-Match Guarantee.
Please Follow those easy steps for returns
1- Please fill out this form Return Authorization Form to get an RMA # you will receive a RMA # with instruction on how to return them within 48 to 72 Business hours from the time you submitted the form. Wait for our confirmation e-mail before shipping back the return
2- Send the product back to us following the instructions indicated in our e-mail and to the address we will provide you.
3- Make sure to confirm with us via e-mail the shipping date, the shipping service you used and the tracking number whenever you have
4- Include details of the return and how you would like for us to go about it (refund, store credit, exchange, etc). Designer Optics is not responsible for items damaged along the way.
Please allow us 3 to 5 business days from when items are received for us to process the refund. The amount to be refunded will not include shipping charges. if the order consists of 3 or more frames we will charge a 20% Restocking fee. otherwise only the shipping will be deducted.
Some exclusions may apply. Please note prescription lenses are final sale. We also do not accept returns on beauty products due to health and safety concerns. For more information please go to Returns
At Designer Optics, our skilled and experienced lab opticians play a crucial role in ensuring the quality and accuracy of your eyewear. With over 30 combined years of experience and full licensure, they review each prescription carefully and are equipped to answer any questions you may have.
Our state-of-the-art lab is equipped with the latest technology and equipment, including advanced edging and cutting technology, to produce lenses that are precise and accurate. Whether you need full frame or rimless lenses, our team is dedicated to providing the best possible results.
For personalized support, simply send an email to Support@designeroptics.com to request a call back from one of our friendly opticians.
Frequently Asked Questions
Are the Ray-Ban 6421 eyeglasses prescription-ready?
Yes, the Ray-Ban RB6421 eyeglasses are fully prescription-ready and compatible with all lens types including single vision, progressive, and bifocal lenses. You can also add blue light filtering, anti-reflective coatings, or Transitions photochromic lenses. The full-rim metal construction securely holds prescription lenses of varying thicknesses.
What size options are available for the Ray-Ban RB6421?
The RB6421 comes in three lens widths: 52mm, 54mm, and 56mm. All sizes feature an 18mm bridge width. Temple lengths vary by size: 140mm for the 52mm, 145mm for the 54mm, and 150mm for the 56mm. The 52mm and 54mm sizes suit most adults, while the 56mm works well for larger faces.
Do the Ray-Ban 6421 frames have adjustable nose pads?
Yes, the RB6421 features adjustable metal nose pads that can be customized for a comfortable, secure fit. This allows you to adjust the frames to sit properly on your nose and prevents slipping, making them more adaptable than frames with fixed plastic nose bridges.
Are Ray-Ban 6421 eyeglasses suitable for both men and women?
Yes, the RB6421 is designed as a unisex frame with a versatile square shape that works for all genders. The clean lines, medium sizing, and variety of color options (from classic silver/black to warmer pink gold/havana tones) make it easy to find a style that suits your personal aesthetic.
What material are the Ray-Ban RB6421 frames made from?
The RB6421 frames are constructed entirely from lightweight stainless steel metal. This material provides excellent durability and corrosion resistance while keeping the frames light and comfortable for all-day wear. The metal construction also allows for easy adjustments by an optician.
How do the Ray-Ban 6421 compare to the 6422 model?
The main difference is rim style: the RB6421 features full-rim construction for maximum lens protection and durability, while the RB6422 has a semi-rimless (half-rim) design for a lighter, more minimalist look. The 6422 is also marketed more toward women, whereas the 6421 is unisex. Both share similar metal construction and square lens shapes.
Compare With Similar Frames
How the Ray-Ban 6421 Eyeglasses stacks up against the closest alternatives we carry.
- Classic rectangular shape with timeless appeal
- Lightweight metal construction
- Adjustable nose pads for custom fit
- Iconic retro-inspired browline design
- Bold statement piece with vintage appeal
- Plastic and metal combination offers unique look
- Iconic round shape with vintage intellectual appeal
- Ultra-lightweight metal construction
- Timeless design that never goes out of style
Read the full comparison
Ray-Ban 6421 vs Similar Metal Eyeglasses
Choosing the right Ray-Ban metal eyeglasses comes down to your style preference and face shape. The RB6421 stands out with its modern two-tone design and versatile square shape, but how does it compare to other popular Ray-Ban metal frames?
RB6421 vs RB6335: Modern Metal Showdown
Both the 6421 and 6335 offer lightweight metal construction and rectangular shapes, but the 6421 brings more visual interest with its contrasting brow bar and two-tone color options. The 6335 takes a more traditional approach with uniform coloring and simpler lines. If you want a frame that makes a subtle statement, the 6421's layered design delivers more personality. The 6335 works well if you prefer understated classics. Price-wise, they're comparable, with the 6421 starting at $104 versus the 6335's similar range.
RB6421 vs Clubmaster 5154: Modern vs Retro
This comparison represents two different design philosophies. The Clubmaster 5154 is Ray-Ban's iconic browline frame—a retro statement piece that's been popular since the 1950s. The 6421 offers a contemporary, streamlined look. The Clubmaster combines plastic and metal for a bolder, more casual aesthetic, while the 6421's all-metal construction keeps things sleek and professional. The Clubmaster runs $132-$280, making it pricier than the 6421's $104-$210 range. Choose the 6421 for modern versatility; go Clubmaster if you want vintage character.
RB6421 vs Round Metal 3447V: Shape Matters
The 3447V Round Metal eyeglasses share the 6421's lightweight metal build and adjustable nose pads, but the round lens shape creates an entirely different look—intellectual and vintage versus structured and contemporary. Round frames suit oval, square, and rectangular faces but can emphasize roundness on round faces. The 6421's square shape is more universally flattering and offers larger lens sizes for stronger prescriptions. Both are priced similarly ($123-$210 for the 3447V), so your decision hinges on whether you prefer round or square aesthetics.
Our take: The Ray-Ban 6421 hits the sweet spot for customers who want a distinctive metal frame that's professional enough for work but interesting enough to stand out. Its two-tone design and square shape offer broader appeal than niche styles like round frames, while the all-metal construction keeps it lighter and more refined than mixed-material designs like the Clubmaster.
At a Glance
Ray-Ban 6335 Eyeglasses
Pros:
- Classic rectangular shape with timeless appeal
- Lightweight metal construction
- Adjustable nose pads for custom fit
- Slightly lower price point
Cons:
- Less distinctive design compared to the 6421's two-tone styling
- Simpler aesthetic without the contrasting brow bar detail
Ray-Ban Clubmaster 5154 Eyeglasses
Pros:
- Iconic retro-inspired browline design
- Bold statement piece with vintage appeal
- Plastic and metal combination offers unique look
- Instantly recognizable Ray-Ban heritage style
Cons:
- Heavier than all-metal frames
- More casual styling may not suit all professional environments
- Higher price range ($132-$280 vs $104-$210)
Ray-Ban Round Metal 3447V Eyeglasses
Pros:
- Iconic round shape with vintage intellectual appeal
- Ultra-lightweight metal construction
- Timeless design that never goes out of style
- Adjustable nose pads
Cons:
- Round shape doesn't suit all face types (less flattering on round faces)
- More niche aesthetic compared to versatile square frames
- Smaller lens size may not accommodate all prescriptions as easily