1962 This poster completely hits the nail on the head when it comes to contrast. Not only are the black and white colors contrasting but the use of positive and negative space displays the information in a clear manner.
∆K : Photo
花瓣网-gned by 天畠 カルナ Image Source Here
The use of a warm and cool color and in addition, the range of saturation and different tones so as to avoid being too vibrant. Also note how the darker blue would be aligned with the lighter red, and so forth to avoid giving off a negative effect and more of a soothing one
The tone in this piece is quite interesting as it makes the design eye catching due to the fact that the colour isn't flat. The shape of the circle is seen as being quite organic making the tone in the circle blend well together as they both have their imperfections.
Emuni llp : Loading / Exposição de fotografia, 2016