C7 Twinkle Christmas Light Bulbs - Blue

Install these bulbs in an existing C7 (E12) cord or shop for new C7 Christmas light cords here.

We love the traditional look of these blue C7 Christmas bulbs.

Choosing these beautiful jewel tone C7 bulbs will give your Christmas tree and holiday decorations the perfect touch of gorgeous light.

Light up your roofline and sidewalk for curb appeal like no other. These bulbs are ideal for lighting up large trees and shrubs as well.

We've seen our customers are using these blue C7 Christmas lights in the following ways:

• downtown lighting
• mixing with red and white for patriotic celebrations
• mix with steady, blue C7 bulbs to add sparkle 
• we love mixing blue with white on a Christmas tree with silver ornaments

Be sure to purchase the Christmas light clips, hooks and stakes used by professionals across the country for sharp lines and easy installation.  

Install these bulbs in your existing C7 cords with E12 (candelabra) bases or choose new cords from our wide variety of lengths, colors and spacing. Tailor your spacing selection and length based on the size of your project. A C7 socket is the same size as a standard night light if you need to test out the size of your existing cords before placing an order.

Be sure to inspect your cords every season and discard them if you see signs of wear and fraying.

Warning: C7 and C9 incandescent bulbs heat up under operation. Do not rest them on heat-sensitive surfaces, next to plastic, or coil them up in such a way that allows the bulbs to rest against the insulation and/or sockets of their cords while they are turned on.

Do not nestle these bulbs into plastic tree limbs. Some of the latest models of plastic Christmas trees have super thin plastic needles that will melt with extended contact with incandescent C7 or C9 bulbs.

We suggest you purchase LED C7 or LED C9 bulbs for this style of tree.

These bulbs should not be covered with fabric or any type of flammable material.

Do not operate lights without supervision. When installed indoors on natural Christmas trees, make sure the tree is well watered, position bulbs so they do not come into contact with needles and limbs and do not operate lights without supervision. Locate an easy to access fire extinguisher near your tree.