Blue Christmas Lights

Blue Christmas lights bring a cool, contemporary look to holiday displays — from intimate indoor trees to large outdoor installations. Available in 5mm strings, C7 and C9 bulbs, net lights, and specialty effect styles, this collection covers every format and scale. Whether you're decorating a single wreath or an entire property, blue lights deliver a clean, striking look that stands out through even the darkest winter nights.

Shades of Blue

The blue family is anchored by a single classic cool blue — a clean, vivid tone that reads clearly at any distance. Within this collection you'll also find blue featured in ColorSplash multi-color blends: Arctic (Blue, Cool White, and Teal), Bahamas (Blue, Green, and Teal), Colombia (Blue, Green, and Purple), and Stardust (Blue, Purple, and Teal). These blends use blue as either the dominant or accent color, creating displays with more depth and variation than single-color strings alone.

Choosing the Right Bulb Type

5mm mini lights: Ideal for Christmas trees, wreaths, garlands, bushes, and indoor displays. The 5mm wide-angle lens provides broad light dispersion — excellent for wrapping around branches and greenery.

C7 and C9 bulbs: Large-format ProCore® LED bulbs designed for architectural displays. C7 and C9 bulbs mount on SPT-1 or SPT-2 wire and are the standard choice for rooflines, eaves, and large structural outlines.

Net lights: Pre-configured grids designed to drape over bushes, shrubs, and ground cover for even, consistent coverage without hand-stringing.

What's In This Collection

Blue LED string lights in 5mm wide-angle, M5 elongated faceted, C6, and G12 lens styles. ProCore® C7 and C9 blue LED replacement bulbs. DreamSpark® slow fade and SuperSpark® strobe variants in blue. Blue pairs beautifully with cool white and silver for a modern winter display — also popular for Hanukkah themes.Cool white Christmas lights are a natural pairing with blue.

How to Choose

Blue christmas lights create a cool, icy atmosphere well suited for winter-themed and contemporary holiday displays. They pair naturally with white or silver accents for a clean, elegant two-color scheme. Choose your bulb format based on installation location — C9 for rooflines and gutters, C7 for windows and trees, or mini strings for garland and wreaths — and compare LED options for consistent, vivid blue output.

Frequently Asked Questions

Q: Are blue Christmas lights LED?

Yes. All blue Christmas lights in this collection use LED technology. LED bulbs produce a richer, more saturated blue than incandescent alternatives and use significantly less energy.

Q: Are blue LED lights dimmable?

Many styles in this collection are compatible with standard dimmer switches. Check the individual product listing to confirm dimmability for that specific product.

Q: How many blue Christmas lights can I connect end-to-end?

End-to-end connection limits vary by product. Check the individual product listing for the specific maximum number of strands that can be safely connected together.

Q: What's the difference between blue and blue+white Christmas lights?

Single-color blue strings produce a consistent, vivid blue throughout the entire strand. Blue+white blends — such as ColorSplash Arctic (Blue, Cool White, and Teal) — alternate multiple colors for a more layered, dynamic look.

Q: Do blue Christmas lights work outdoors?

Yes. Every product in this collection is rated for both indoor and outdoor use.

Shop the full selection at The Christmas Light Emporium — all backed by the 3-Year Reindeer Proof™ Warranty.

Also in this collection family: Cool White Christmas Lights, Purple Christmas Lights, and Teal Christmas Lights.