JetBlue's logo design's most prominent feature is its unexpected capitalization. Like many modern businesses, JetBlue's brand is written as one word. However, unlike in type, the "j" remains lowercase while the "B" is capitalized, adding an extra dash of creativity to the type trend.
While (obviously) associated with the color blue, many tones and geometric patterns grace the company's collateral. Unique triangle shapes, symmetrical patterns, and their iconic dots grace everything from airplane tails to branded credit cards (complete with brand loyalty rewards, to boot!). Although all different, they are unified in the same cool blue hues and simple sans-serif logo design, branding each item as JetBlue.