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Introducing Spectral Colors#29517

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Sven-J-Steinert wants to merge3 commits intomatplotlib:main
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2 changes: 2 additions & 0 deletionsdoc/api/colors_api.rst
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Original file line numberDiff line numberDiff line change
Expand Up@@ -96,3 +96,5 @@ as dictionaries that map color names to hex strings.
.. py:data:: CSS4_COLORS

.. py:data:: XKCD_COLORS

.. py:data:: SPECTRAL_COLORS
13 changes: 12 additions & 1 deletiongalleries/examples/color/named_colors.py
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Expand Up@@ -25,13 +25,16 @@
from matplotlib.patches import Rectangle


def plot_colortable(colors, *, ncols=4, sort_colors=True):
def plot_colortable(colors, *, ncols=4, sort_colors=True, sample=False):

cell_width = 212
cell_height = 22
swatch_width = 48
margin = 12

if sample:
colors = dict(list(colors.items())[::10])

# Sort colors by hue, saturation, value and name.
if sort_colors is True:
names = sorted(
Expand DownExpand Up@@ -97,6 +100,14 @@ def plot_colortable(colors, *, ncols=4, sort_colors=True):
plot_colortable(mcolors.CSS4_COLORS)
plt.show()

# %%
# ---------------
# Spectral Colors
# ---------------
# The full visible spectrum from 390nm to 780nm is supported in integers
# e.g. ``"405nm"``. A sub sample of the defined colors by wavelength is shown below.
plot_colortable(mcolors.SPECTRAL_COLORS, ncols=4, sort_colors=False, sample=True)

# %%
# -----------
# XKCD Colors
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4 changes: 4 additions & 0 deletionsgalleries/users_explain/colors/colors.py
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Expand Up@@ -48,6 +48,10 @@
| `xkcd color survey`_ with ``'xkcd:'``| - ``'xkcd:eggshell'`` |
| prefix. | |
+--------------------------------------+--------------------------------------+
| Case-insensitive spectral colors | - ``'405nm'`` |
| specified by wavelength in nano | - ``'525nm'`` |
| meters (supported range 390..780) | - ``'650nm'`` |
+--------------------------------------+--------------------------------------+
| Case-insensitive Tableau Colors from | - ``'tab:blue'`` |
| 'T10' categorical palette. | - ``'tab:orange'`` |
| | - ``'tab:green'`` |
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