A blue coloured scented glass jar candle typically has the following features:

Glass jar: The candle is housed in a glass jar that is usually tinted blue to match the scent and provide an attractive and calming appearance.

Scent: The candle is scented with a fragrance that is typically associated with the colour blue, such as ocean breeze, or blueberry. These scents are often associated with relaxation, calmness, and freshness.

Wax: The candle is made of wax that is usually a light shade of blue, to match the jar and scent. The wax is typically made of natural materials, such as soy or beeswax, and is free of harmful chemicals.