Onyx Deep Black Cellular Shades

True black is surprisingly rare in window coverings. Many "black" shades are actually dark grey, or they have a plasticky sheen that reflects light. Onyx Deep Black cellular shades are the exception: formulated with high-density carbon black pigments, they achieve a rich, velvety black that absorbs 99% of visible light. The matte finish eliminates glare and hotspots, making these shades the perfect choice for home theaters, media rooms, and any space where you want the window to disappear completely. Yet despite their dramatic appearance, Onyx shades offer the same thermal insulation and noise reduction as our lighter-colored cellular fabrics. Available in ¾-inch and 1⅛-inch single-cell, and 1⅛-inch double-cell configurations, with light-filtering, room-darkening, and blackout opacities. Custom‑sized to your exact window dimensions. Black, redefined.

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True Black, Not Charcoal

Many “black” vinyl and polyester fabrics read as dark grey or develop a plasticky sheen. Onyx Deep Black is engineered with 8% carbon‑black loading—the maximum feasible concentration for textile fibers. The result is a deep, neutral black with no brown or blue undertones. A matte topcoat absorbs light rather than reflecting it, achieving a gloss level under 5 units (ASTM D523).

Ideal for Home Theaters & Media Rooms

Light bounce from window coverings can destroy the contrast ratio of projectors and televisions. Onyx absorbs stray light, ensuring the only illumination in the room comes from your screen. This dramatically improves perceived black levels, shadow detail, and overall image quality. For home‑theater purists, Onyx is the definitive choice.

Blackout and Non‑Blackout Options

  • Light‑Filtering Onyx — 5% openness; soft, velvety appearance with subtle glow

  • Room‑Darkening Onyx — 80% light block; deep, saturated black

  • Blackout Onyx — 100% light block; total darkness using our TripleCell light‑absorbing core

All opacities share the same rich, neutral black tone.

Thermal & Acoustic Performance

Black fabrics naturally absorb more solar radiation, but Onyx cellular shades counteract this with their insulating honeycomb structure. Trapped air cells prevent conducted heat from entering the room in summer, while the black surface aids passive solar warming in winter. Onyx also provides excellent sound absorption, with an NRC of 0.25–0.35.

Fade Resistance

Black dyes are notoriously difficult to stabilize, often fading to brown or grey. Onyx fabrics are solution‑dyed with high‑stability carbon‑black pigments and UV stabilizers. Rated Class 5 (excellent) for lightfastness, they are warrantied against significant fading for 10 years.

Coordinated Hardware

For a seamless, monolithic look, headrails, bottom rails, and cassettes are available in a matching matte‑black finish. The powder‑coated hardware mirrors the depth and richness of the fabric. White or silver hardware is also available for a modern, high‑contrast accent.