title: How to get default blue colour of matplotlib.pyplot.scatter?
body: <p>How do I get the shade of blue that is used as default in <code>matplotlib.pyplot.scatter</code>? When giving the keyword argument <code>c='b'</code>, it gives a darker shade of blue. In this <a href="https://matplotlib.org/2.0.0/api/_as_gen/matplotlib.axes.Axes.scatter.html" rel="noreferrer">documentation</a> of <code>matplotlib.pyplot.scatter</code>, it says the default is supposed to be <code>'b'</code>, yet it looks different.</p>
  
  <p>See example below:</p>
  
  <pre><code>import matplotlib.pyplot as plt
  fig, ax = plt.subplots()
  ax.scatter(-1, 0)
  ax.text(-1, 0, 'Default blue')
  ax.scatter(1, 0, c='b')
  ax.text(1, 0, 'Darker blue')
  ax.set_xlim(-2, 2)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/O2GmQ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/O2GmQ.png" alt="Figure"></a></p>
  
  <p>I'm using Python 3.5 with Matplotlib 2.0.0. The reason why I'm asking this, is because I would like to use the same blue colour when plotting some of the points one by one with <code>plt.plot()</code>.</p>