It looks like Ty Pawb does not want anyone in the building who is visually impaired- the signage has not taken into account current recommendations for colours to ensure that the 10%+ of the population that has difficulty in separating words from background colours will be able to read them.
For a project costing so much it would have been expected to have been essential to have taken into account the requirements for people with a disability. There is also a lack of a colour contrast on corners of walls and doorways- definitely not a building to recommend to people with a visual impairment.
Before anyone comes in with comments that people who are visually impaired cant see art – many people can identify colours and still have senses such as touch, hearing and smell to still enable them to experience art in its broadest sense. Lowary in Liverpool is excellent at having various exhibitions to exploit senses.