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

The Skims Eclipse and Onyx colorways are nearly identical, yet nuanced enough to serve different style preferences. Eclipse is a smoky, muted charcoal black for a softer, more mysterious look, while Onyx is Skims' classic, saturated true black that serves as a versatile wardrobe foundation. Functionally, they are identical in fabric, fit, and price, the choice comes down to pure aesthetic preference.

Here's everything you need to know to pick the right sophisticated black shade for you.

Skims Eclipse Collection

The Eclipse collection features Skims' signature shapewear, bodysuits, and loungewear in a deep, smoky charcoal hue. This muted black is designed for those who find a traditional true black to be too stark or who want a more modern, nuanced dark neutral. It offers a sophisticated, slightly mysterious vibe that feels fashion-forward while maintaining versatility.

• What it is: A color collection based on a smoky, muted black or deep charcoal shade, available across various Skims styles.
• Key features: Utilizes Skims’ standard smoothing and body-contouring fabrics. Same fit, function, and support as pieces in the brand's core colors.
• Price: An identical price point to other core colors, typically ranging from $32–$68.
• Materials/Construction: Dependent on the product, but typically made from Skims' signature nylon and elastane blends that offer a supportive, second-skin feel.
• Sizing/Fit: Available in the full inclusive range from XXS to 4X or 5X. Fits true to size, consistent with the standard Skims sizing charts.
• Pros: A modern and chic alternative to classic black. Less harsh than a true black. Excellent for creating layered, dark tonal looks. Feels sophisticated and unique.
• Cons: Slightly less versatile than a true black for all possible outfits. Shade may appear different in various lighting conditions.

This color is ideal for anyone seeking a dark neutral that provides a softer, more complex tone than standard black.

Shop this product: skims.com/collections/eclipse

Skims Onyx Collection

Onyx is not a unique collection, but rather the name for Skims’ signature true black colorway. As the brand's quintessential black, it is available across almost every product line, from shapewear to basics. It provides a timeless, deep black look that is endlessly versatile and serves as a foundational piece in any wardrobe.

• What it is: The name given to Skims' classic, deep true black color, offered across most product categories.
• Key features: The ultimate versatile shade. Uses the same signature Skims fabrics, offering the exact same performance and quality as other colors.
• Price: Ranges from approximately $32 to $68, consistent with pieces in the Eclipse shade.
• Materials/Construction: Crafted from Skims' high-quality nylon and elastane blends known for comfort, durability, and a seamless finish.
• Sizing/Fit: Follows standard Skims sizing from XXS to 4X/5X and is known to be true to size.
• Pros: Exceptionally versatile and timeless. Pairs with any item in your wardrobe. A true, deeply saturated black without any other-colored undertones. An essential, reliable staple.
• Cons: A standard color that may feel less unique or special. Can feel stark for those who prefer a more muted palette.

Onyx is the perfect choice for someone building a foundational shapewear wardrobe or who prioritizes timeless versatility above all.

Shop this product: skims.com

Skims Eclipse vs. Onyx Comparison

Color & Visual Difference

The only meaningful difference between Eclipse and Onyx is the color itself. Onyx is a straightforward, saturated, and classic black. There are no competing undertones - it is simply a pure, deep black. This makes it an easy, seamless match for any other black item in your wardrobe.

Eclipse, in contrast, is fundamentally a muted black. It has distinct smoky, charcoal gray undertones that become more apparent in direct light. This softness makes it less stark than Onyx and gives it a more contemporary, moody appearance. When placed side-by-side, Eclipse looks like a soft, washed-out cousin to Onyx's sharp, definitive black.

Style & Versatility

When it comes to versatility, Onyx is the clear winner. As a true black, it functions as a universal neutral that's guaranteed to work with countless outfits in any season. It’s the safe, reliable, and necessary staple for any shapewear collection. You simply can't go wrong with it.

Eclipse offers versatility in a more styled way. Its charcoal notes make it perfect for tonal outfits featuring other grays, blacks, and deep blues. It brings a level of sophistication and intentionality to a look that can make an outfit feel more considered. While it works well for day-to-day wear, Eclipse particularly shines in evening looks or layered styles where its subtle complexity can be appreciated.

Materials, Fit, & Price

From a technical standpoint, there is no difference between the two. Skims uses the same high-performance fabrics, exacting manufacturing standards, and inclusive sizing for both colorways. Whether you choose a Fits Everybody bodysuit in Eclipse or Onyx, it will feel and perform exactly the same. They also share the same price point, so your decision is driven completely by color preference, not value.

Which One Should You Choose?

Both shades are excellent options, but they cater to slightly different style priorities.

Choose Eclipse if:

• You find true black to be too harsh or boring.
• You want a sophisticated shade that feels both modern and moody.
• Your wardrobe includes a lot of charcoals, grays, and other muted tones.
• You appreciate subtle, fashion-forward details in your staple pieces.

Choose Onyx if:

• You need a foundational, goes-with-everything shapewear piece.
• You prioritize timelessness and pure versatility.
• This is your first Skims purchase and you want a foolproof option.
• You want a true black that will seamlessly disappear under other black clothing.

Frequently Asked Questions

What's the main difference between Skims Eclipse and Onyx?

The only difference is color. Eclipse is a muted, smoky black with charcoal undertones, while Onyx is a classic, saturated true black. The fabric, fit, quality, and price of corresponding products are identical.

Is Skims Eclipse just gray?

No, Eclipse is a very dark black. However, it has strong charcoal undertones that give it a "smoky" appearance compared to the pure black of Onyx. It's not a mid-tone or light gray.

Which color is more versatile?

Onyx is universally more versatile because it's a timeless, true black that pairs easily with virtually any other color or style in a wardrobe.

Are they true to size?

Yes, both colorways follow the standard Skims sizing chart. Most customers find that the products run true to size, but it's always best to consult the specific size guide for the item you are interested in.

Do the colors fade after washing?

Customers generally report that Skims products hold their color very well through multiple washes when following care instructions. Both Onyx and Eclipse are known for their great color retention.

Is there a price difference?

No. For the same style of product (e.g., a sculpting bodysuit), there is no price difference between the Eclipse and Onyx versions.

What Skims fabric are they made from?

Eclipse and Onyx are colorways, not fabric collections. You can find both colors on products made from various signature Skims fabrics, like the buttery soft Fits Everybody line or the supportive Seamless Sculpt collection.

Can you see Eclipse or Onyx under light-colored clothing?

Yes, as dark colors, both Eclipse and Onyx are likely to show through light or sheer fabrics. For wearing under light clothing, Skims offers a range of nude tones like Mica, Clay, and Ochre.