Is racial colourblindness really this bad?

I am writing this, not as a man of mixed race, but as a husband of a mixed-race wife, and consequently, the father of mixed-race children. I have always considered myself, until recently, colour-blind on the issue of race. I say until recently because after researching the term in its context (google racially colour-blind), I find it apparently makes me unaware of the issues, wanting to avoid any discussion on racial issues, and potentially a racist! Why are such outlets as the Oprah Magazine (and many others) claiming this? Are they just generalising in the same way racists can categorise those that they judge as “beneath” them? I don’t mean to come off as too harsh or angry as I know this was not directed at me personally, but wouldn’t the world be better if we were all colour-blind? Then there would be no more issues to be ignorant of, right?

https://www.oprahmag.com/life/relationships-love/a32824297/color-blind-myth-racism/