You don’t have to read many operational or financial reports before you discover the frequent use of red and green circles to signal how things are going for a particular metric.
Like in this integrated dashboard.
Green = Good, Red = Bad.
Sometimes they are joined by amber or yellow, to make up the classic traffic light reporting system.
There’s a problem though.
In the UK, around 5% of the population is affected by colour blindness. That’s 2.7m people.
The condition is more prevalent in men. You can expect that about 1 in 12 of your male colleagues will experience it.
For those with deuteranomaly, the most common form of colour blindness, there is a reduced sensitivity to the colour green.
With the result that most reds and greens just look the same.
So how are things going? Good or Bad?
Try yellows and blues if you want to make sure that we can all tell the difference.