Colorscale should be betwen 0-255 or 0-1 but not a mixed behaviour #4942

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1. ryanh153 commented on Sep 28, 2021

   

   ryanh153

   on Sep 28, 2021

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   I got a similar issue with Scatter3d where the legend interprets the color on 0-1 scale but the marker interprets it on 0-255.

   Code:

   from plotly.subplots import make_subplots
   import plotly.graph_objects as go
   import numpy as np
   
   fig = make_subplots()
   fig.update_layout(height=600, width=1200)
   x , y, z = np.linspace(0, 100, 100), np.linspace(-10, 10, 100), np.linspace(5, 25, 100)
   fig.add_trace(go.Scatter3d(x=x, y=y, z=z, mode='markers', marker={'color': 'rgb(1.0, 0.0, 0.0)'}, name='Red'))
   fig.add_trace(go.Scatter3d(x=x+100, y=y, z=z, mode='markers', marker={'color': 'rgb(0.0, 0.0, 1.0)'}, name='Blue'))
   fig.show()
   

   Plot produced (in question on stack overflow):
   https://stackoverflow.com/questions/69364157/markers-too-dark-with-plotly-scatter3d

   Agreed that this is annoying would be nice to have fixed.
2. gvwilson

   self-assigned this

   on Jun 26, 2024
3. gvwilson

   removed their assignment

   on Aug 2, 2024
4. gvwilson

   added

   bugsomething brokensomething broken

   P3backlogbacklog

   on Aug 9, 2024
5. emilykl commented on Aug 30, 2026

   

   emilykl

   on Aug 30, 2026

   Contributor

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   I think we can close this one now, since numeric color values are now always interpreted in the 0-255 range following the merge of #7536 / #7962.
6. emilykl

   closed this as completedon Aug 30, 2026