Described herein are processes and devices that determine a high contrast setting on a client. Some embodiments include creating an object in a web document, assigning a pre-determined color value to the object, associating the object to the web document, and generating a computed color display value for the object in response to the object being associated with the web document. Some embodiments are further directed to comparing the pre-determined color value to the computed color display value and generating a result based on the comparing of the pre-determined color value to the computed color display value, which result indicates whether the system is set to the high contrast setting. Some embodiments are further directed to storing the result in a variable; and sending the variable to a server to process additional web documents, using the variable, before the additional web documents are loaded onto the client device.