Colour can have a significant impact on the viewer. For example, it can change the mood of a scene, turn a dull landscape into a vivid environment or symbolise parts of information.
Colour is used extensively in all types of data visualisations, displays and presentations, so it is important to pay attention to the overall use of colour within a video. Too many colours will distract an audience rather than engage them. You should consider the colour palette of the video as part of the overall design of the video.
Video production uses 2 main postproduction tasks to control the palette in the video: colour correction and colour grading.
Colour correction alters the colour of the sequence to an accurate standard that would be viewed by the eye. It is used to conform multiple shots to the same quality.
Colour grading alters the colour of the sequence to provide a range of different effects – for example, making the footage consistent in appearance with the rest of the video, or changing the colour values to create an entirely new ‘look and feel’.