As their name implies, Virginia Bluebells (Mertensia virginica) are most commonly blue. But, like many other blue flowers, they also occur in a range of colors including pink, white, pale blue, and lilac. Every year we return to the bluebell patch along the Trillium Trail in Fox Chapel to find bluebells in the wrong colors.
For a detailed description and many more pictures, see the Mertensia virginica reference page.