矢车菊蓝（英文：Cornflower blue），是青色之一，介乎绿色和蓝色之间。因矢车菊而得名，矢车菊蓝是真实地存在，但多数「蓝色」花之中是蓝中带紫的。小说家卓克·帕拉力克声称矢车菊蓝至少一次出现在他每本著作中。因英文的称呼与玉米粉（Corn flour）相似而常常被混淆，玉米粉本身的颜色是浅黄色的。

Cornflower blue is a shade of medium-to-light blue containing relatively little green compared to blue. This hue was one of the favorites of the Dutch painter Johannes Vermeer, his other most-noted favorite being yellow.

The most valuable blue sapphires are called cornflower blue, having a medium-dark violet-blue tone.