Statement: Dennis Villeneuve uses low key lighting together with the colour green, blue and black in the scene where K comes home to his apartment to portray some ideas about the film.
Evidence: For example, when K was walking towards the building apartment, we see low key lighting and the light is coming from the billboard advertising that is on both sides of his apartment building. During the scene of K coming home and essentially throughout the scene, the lights are quite dim and dull. The colour that is coming from the lights are harsh white with blue and green and there is also a wide area in the building apartment where the colour is black.
Explanation of the director’s purpose: Dennis Villeneuve effectively chooses this specific lighting to portray a negative mood and how dangerous society has become due to the obsession with technology. Also, it gives us an idea about how K and other blade runners are viewed in their society. As they are viewed as no more than bio-engineer humans and looked down upon and treated like they do not deserve rights or protection. These aspects also reflects what K is feeling inside and his lack of experience.
Explanation of effect on the audience: With the use of these two aspects, audiences were able to feel the darker feelings and emotions of K through the lowkey lighting and colour. Especially, by combining these aspects together, we were able to understand the danger, cold and harshness of the environment they live in. This is important because of these aspects we are the one who feels the discrimination K is receiving despite K being a replicant who does not have any ‘emotions'. As he is just a slave that has no consciousness and cannot think for himself, love someone, experience things as even his memory is just a memory that is implanted in him.
Link: However, as the movie continuous, we were able to notice that despite K being a replicant, he is aware that he retires and hunt down rogue replicant, we saw in K’s eye that he somehow slightly felt guilty of retiring those replicants but he has no choice as he is a slave. Combining the low key lighting with the colours blue and green is very important because it gives us a depressed mood about K and society.