Python from color name to RGB

Question

If I have a function which takes color as an input to be edited first (by RGB numbers), and then used in matplotlib.pyplot. How can I convert color name to RGB?

For example:

def function(color):
     color[3] = 0.5
     plt.plot([1,2],[2,4], color = color)

then function((0,0,1,1)) works, but function('blue') will only work on the plt.plot.

How can I convert color name to RGB, (such as blue to (0,0,1,1))?

score 41 · Answer 1 · edited Apr 13 '19 at 19:00

41

You can use with matplotlib.colors

from matplotlib import colors

print(colors.to_rgba('blue'))

Result:

(0.0, 0.0, 1.0, 1.0)

edited Apr 13 '19 at 19:00

busybear

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answered Jul 15 '18 at 18:59

Yakir Tsuberi

1,373
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3

how to get the color name from rgb value in python? – MathanKumar Jun 04 '20 at 12:28
Use the [CSS4_COLORS](https://matplotlib.org/stable/gallery/color/named_colors.html) list from matplotlib. – Fábio Aug 16 '21 at 21:06

score 3 · Answer 2 · answered Jul 15 '18 at 19:47

3

Found the solution, by

from matplotlib import colors
orange_rgb = colors.hex2color(colors.cnames['orange'])

answered Jul 15 '18 at 19:47

Python from color name to RGB

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