Skims Graphite vs. Onyx: What's the difference?

The difference between Skims Graphite and Onyx is purely a matter of color: Graphite is a sophisticated, dark charcoal grey with cool undertones, while Onyx is a deep, classic, true black. There is no difference in fabric, fit, price, or quality between the two colors, the choice simply comes down to whether you prefer a softer dark neutral or a timeless true black.

Here’s everything you need to know about these essential shades from Skims to choose the right one for your wardrobe.

Skims Graphite

Skims' Graphite color is a modern, chic alternative to standard black. It's a deep charcoal grey that feels less stark than Onyx, offering a versatile yet slightly softer look. This shade is perfect for those who wear a lot of grey, silver, or cool-toned colors, as it coordinates perfectly while providing a sleek, moody aesthetic.

• What it is: A signature dark charcoal grey color option available across Skims collections.
• Key features: Cool-toned grey shade that's less intense than pure black. Sophisticated, minimalist, and versatile.
• Price: Same price as all other color options for any given product (typically $20–$70+).
• Materials/Construction: Offered in the same high-quality nylon and spandex blend fabrics as other Skims products, ensuring a comfortable, second-skin feel.
• Pros: A stylish and softer alternative to classic black. Complements cool-toned wardrobes incredibly well. Looks less harsh against very fair complexions. Feels modern and fashion-forward.
• Cons: May not be completely invisible under sheer black clothing. Less of a universal basic compared to true black. Could potentially clash with warmer color palettes.

This color is an excellent choice for anyone who finds pure black too intense or wants a sophisticated dark neutral for loungewear and visible basics.

Shop this product: skims.com/collections/shades-graphite

Skims Onyx

Onyx is Skims' signature true black. As a foundational color, it embodies timelessness and maximum versatility, designed to be a staple in anyone's collection of basics and shapewear. This deep, saturated shade offers a classic, slimming appearance and is completely invisible under dark clothing, solidifying its place as an essential.

• What it is: The classic, deep true black color available across all Skims product lines.
• Key features: A rich, pure black pigment without any undertones. Classic, versatile, and provides a sleek silhouette.
• Price: Identical to other colors in the same style, no additional cost for a staple shade.
• Materials/Construction: Made with Skims' innovative, seamless fabrics just like every other colorway.
• Pros: Maximum versatility, it goes with everything. A true essential for any underwear or shapewear drawer. Guaranteed to be invisible under black and other dark garments. Universally flattering on all skin tones.
• Cons: Can appear slightly stark against very fair skin (some may prefer the softer Graphite). Less distinctive than other unique Skims shades.

Perfect for those building a core collection of essentials, needing undergarments that seamlessly disappear under dark clothing, or who simply prefer the classic elegance of true black.

Shop this product: skims.com/collections/shades-onyx

Skims Graphite vs. Onyx Comparison

Color & Tone

The primary difference is the color itself. Onyx is a pure, saturated black. It has no discernible undertones and is the darkest shade available, designed to be a classic staple. It’s consistent and reliable, matching any other black apparel you own.

In contrast, Graphite is a dark charcoal grey. It has noticeably cool, almost bluish undertones, making it a "softer" dark neutral. When placed next to Onyx, the difference is clear - Graphite is grey, not black. This hue is often viewed as more modern and less severe, especially on lighter complexions.

Versatility & Styling

When it comes to versatility, Onyx is the undefeated champion. As true black, it works under literally any dark clothing and is an essential for functional shapewear where invisibility is key. You can never go wrong with a black bodysuit or brief, making Onyx the ultimate foundational shade. Styling is effortless because it creates a seamless base for any outfit.

Graphite is also highly versatile, but in a more stylistic way. It is fantastic for loungewear or sets intended to be seen. It pairs beautifully with denim, whites, pastels, and other shades of grey. While it is dark enough to work under many garments, it may not perfectly blend under thin or sheer black fabric the way Onyx does. Think of Onyx for function and Graphite for a mix of function and fashion.

Price & Materials

This is the easiest comparison: there is no difference. Skims does not charge differently based on color. Whether you choose Onyx or Graphite in the "Fits Everybody" collection or the "Soft Lounge" line, the price, fabric composition (usually a blend of nylon and elastane), feel, and quality will be identical. Your choice is purely aesthetic.

Who Each Color Works Best For

Onyx is best for the traditionalist who wants to build a collection of timeless, essential basics. It's the top choice for shapewear pieces intended to be hidden, as its true black color is the most effective under dark clothing. If you are looking for your first Skims piece and are unsure which color to get, Onyx is a can't-miss, universally flattering option.

Graphite is better suited for the fashion-conscious individual who finds black to be too harsh or boring. It’s ideal for those whose wardrobe is built on a cooler color palette - think lots of blues, silvers, and greys. It’s excellent for loungewear, where the color adds a touch of modern sophistication, or for undergarments to be worn with clothing other than pure black.

Which One Should You Choose?

The right choice depends entirely on your personal style, skin tone, and how you plan to wear your Skims pieces.

Choose Graphite if:

• You find pure black too harsh against your complexion.
• Your personal style leans modern, and you love cool-toned neutrals.
• You are buying loungewear or a set where you want the color to stand on its own.
• Your wardrobe has a lot of greys, whites, blues, and silver jewelry.

Choose Onyx if:

• You need shapewear that will be completely invisible under black and dark-colored outfits.
• You're building a wardrobe of essential, timeless basics.
• You want maximum versatility and need a color you can depend on for any occasion.
• You prefer the classic, chic aesthetic of true black.

Frequently Asked Questions

What is the main difference between Skims Graphite and Onyx?

The only difference is the color. Onyx is a true, deep black, while Graphite is a dark charcoal grey with cool undertones. All other aspects, such as the fabric, fit, price, and quality, are identical.

Is Skims Graphite more grey or black?

Graphite is definitively a dark grey. When viewed alone, it can read as a soft black, but next to Onyx, its grey charcoal tone becomes very apparent.

Which color is more slimming, Graphite or Onyx?

Both are dark, neutral shades that provide a slimming effect. Traditionally, pure black (Onyx) is considered the most slimming color, but the visual difference is minimal. The excellent construction of Skims shapewear contributes far more to the slimming fit than the color choice.

Should I get the same size in Graphite and Onyx?

Yes. The color has no impact on sizing or fit. Choose your regular Skims size, as the fit is consistent across all colorways within the same product style.

Does Skims Graphite or Onyx fade after washing?

Skims products are known for colorfastness, but all dark garments can fade without proper care. To maintain the deep pigment of Onyx and Graphite, wash them in cold water on a gentle cycle and either tumble dry on low or lay flat to dry as per the care instructions.

Which Skims color is more popular, Onyx or Graphite?

Onyx is a foundational color and very likely a perennial bestseller. Classic black is an essential for any undergarment or basics brand. Graphite is also popular, especially appealing to shoppers seeking a modern neutral beyond black.

Can I wear Graphite under black clothes?

For most black clothing, Graphite is dark enough. However, under thin, sheer, or form-fitting black fabrics, its grey tone might show through slightly. For a guaranteed invisible look under black, Onyx is the fail-safe option.

Will I notice a big difference between the two colors?

Yes, side-by-side the colors are noticeably different. Onyx is a pure black, while Graphite is a soft charcoal. Your choice will visibly impact your overall look, especially if the piece is worn as clothing rather than just an undergarment.