Observational HRD of Gaia DR3 YSOs (red dots) and reference sources based on 4.2 million Gaia objects (black dots) selected based on their highly reliable parallax, sufficient S/N in both BP and RP bands, and the sufficiently high number of data points in their light curves. The Gaia DR3 YSOs occupy a specific region above the main sequence and below the giant branch. The contour levels are at 5%, 25%, 45%, 65%, and 85% of the maximum density value. In the comparison with other catalogues, we use only the contours of the DR3 distribution for better visibility of the underlying data points.