The orange color of carrots that we have come to be so familiar with is not their natural color. In fact, carrots were modified by their Dutch growers in the 17th century to match their national color.
A search for “purple carrots” revealed a number of images of present day purple carrots, like the ones in the picture. Carrots also come in shades of red in certain parts of the world.
Scientists are also engineering “supercarrots” that provide much more calcium than the normal variety.

Why aren’t purple carrots in market? Is taste any better?
they must be lot like turnips
yummy, blood carrots,buahahahaa. i believe they taste nice. eating one right now
Sainsburys used to sell Purple Carrots. Oddly they are still orange on the inside.
Agree with @picsmaster