The set contains cards of 7 different weights. It is separated into two halves: cards for comparison with black paper and cards for any other bright colour paper. Despite the fact that two sets come in the same box, they are presented as separate tools that gives value to both its unique darkness and the fact that Sirio Ultra Black can effectively work with other colour papers.
Each card has a die-cut hole that helps to demonstrate the true relationship between the card colour and the colour underneath.
All you need to do is just take a card and put it on top of other black paper. You can also try it with colour paper to see how bright the colour becomes.
There is a hint in these icons: in the first set the icons show what can be created out of this exact black paper weight.
The second set consists of icons associated with 7 rainbow colours and thus suggests what papers / colour surfaces can be placed under the card.
The card makes colours become bright and other blacks fade.
* outside: Sirio Ultra Black
inside: other black paper
These cards can be used for framing various colourful surfaces instead of paper as there is no restrictions of how the comparison should be made. As far as the target audience is designers they can easily come up with new ways to use these cards in addition to their main function.
