Table Color Considerations

Using color in tables effectively can help users visually separate columns and can visually improve the readability of table data. However, it is important to keep several accessibility issues in mind.   In order to create tables that are accessible to all users, content in the table must not use color as the sole means of conveying information. Information provided using color is (by default) not announced to users of screen reading software and may not be noticed by users of screen magnification and/or high color contrast. Providing information with only the use of color may also pose difficulties for individuals who are color blind. Red-green color blindness is the most common form of color blindness, affecting as many as 8% of men with North European ancestry. This may represent a significant number of students in your course. When using color to improve the readability of table data, such as alternating column or row background colors, it is important to ensure that the colors used still meet color contrast requirements. Using colors which meet color contrast requirements will ensure that users of high color contrast will still be able to access the information provided in the table. Refer to the Color Considerations chapter in the Text Layout focus area for more information about tools for evaluating color contrast.