This refers to an image that has been designed with the theme or concept of red and blue rulers. In graphic design, using specific themes or objects like rulers can be a metaphor for precision, measurement, or the idea of creating a balanced composition. The 'red ruler' and 'blue ruler' might represent different elements in the design, possibly indicating a distinction between two aspects or a dualistic approach. Without further context, it's difficult to provide more specific information about the image or its intended meaning.