Graph colors too bright/light

Hi guys, my plotly group bars graphs are too bright/light, as you can see in the picture attached, it does not match the legend color.

Please let me know what I can do to fix it.

Thank you!

To solve, just change from to px.histogram.

When several rows share the same value of x, the rectangles are stacked on top of one another by default. So, just changing the graph type will do the trick.