Renamed color sequence to authors name (Okabe Ito)

brooks-code · brooks-code · commit 1aa6f0b5280b · 2025-12-10T01:52:41.000Z
diff --git a/galleries/examples/color/color_sequences.py b/galleries/examples/color/color_sequences.py
@@ -38,7 +38,7 @@ def plot_color_sequences(names, ax):
 
 built_in_color_sequences = [
     'tab10', 'tab20', 'tab20b', 'tab20c', 'Pastel1', 'Pastel2', 'Paired',
-    'Accent', 'Accessible', 'Dark2', 'Set1', 'Set2', 'Set3', 'petroff6',
+    'Accent', 'Okabe-Ito', 'Dark2', 'Set1', 'Set2', 'Set3', 'petroff6',
     'petroff8', 'petroff10']
 
 
diff --git a/lib/matplotlib/_cm.py b/lib/matplotlib/_cm.py
@@ -852,7 +852,6 @@ def _g36(x): return 2 * x - 1
     (0.50196078431372548, 0.0                 , 0.14901960784313725)
     )
 
-
 # ColorBrewer's qualitative maps, implemented using ListedColormap
 # for use with mpl.colors.NoNorm
 
@@ -867,12 +866,23 @@ def _g36(x): return 2 * x - 1
     (0.4,                 0.4,                 0.4                ),
     )
 
-# Okabe-Ito accessible color palette (2002).
+_Dark2_data = (
+    (0.10588235294117647, 0.61960784313725492, 0.46666666666666667),
+    (0.85098039215686272, 0.37254901960784315, 0.00784313725490196),
+    (0.45882352941176469, 0.4392156862745098,  0.70196078431372544),
+    (0.90588235294117647, 0.16078431372549021, 0.54117647058823526),
+    (0.4,                 0.65098039215686276, 0.11764705882352941),
+    (0.90196078431372551, 0.6705882352941176,  0.00784313725490196),
+    (0.65098039215686276, 0.46274509803921571, 0.11372549019607843),
+    (0.4,                 0.4,                 0.4                ),
+    )
+
+# Okabe-Ito accessible and print-friendly color palette (2002).
 # By Masataka Okabe (Jikei Medical School) and Kei Ito (University of Tokyo).
-# Qualitative color palette that is unambiguous regardless of whether the viewer has colorblindness.
-# https://jfly.uni-koeln.de/color/#pallet
+# Qualitative color palette that is unambiguous regardless of whether
+# the viewer has colorblindness. https://jfly.uni-koeln.de/color/#pallet
 
-_Accessible_data = (
+_Okabe_Ito_data = (
     (0.0, 0.0, 0.0),                        # black
     (0.901960784, 0.623529412, 0.0),        # e69f00
     (0.337254902, 0.705882353, 0.91372549),  # 56b4e9
@@ -883,17 +893,6 @@ def _g36(x): return 2 * x - 1
     (0.8, 0.474509804, 0.654901961),        # cc79a7
 )
 
-_Dark2_data = (
-    (0.10588235294117647, 0.61960784313725492, 0.46666666666666667),
-    (0.85098039215686272, 0.37254901960784315, 0.00784313725490196),
-    (0.45882352941176469, 0.4392156862745098,  0.70196078431372544),
-    (0.90588235294117647, 0.16078431372549021, 0.54117647058823526),
-    (0.4,                 0.65098039215686276, 0.11764705882352941),
-    (0.90196078431372551, 0.6705882352941176,  0.00784313725490196),
-    (0.65098039215686276, 0.46274509803921571, 0.11372549019607843),
-    (0.4,                 0.4,                 0.4                ),
-    )
-
 _Paired_data = (
     (0.65098039215686276, 0.80784313725490198, 0.8901960784313725 ),
     (0.12156862745098039, 0.47058823529411764, 0.70588235294117652),
@@ -1485,7 +1484,7 @@ def _gist_yarg(x): return 1 - x
     'winter': _winter_data,
     # Qualitative
     'Accent': {'listed': _Accent_data},
-    'Accessible': {'listed': _Accessible_data},
+    'Okabe-Ito': {'listed': _Okabe_Ito_data},
     'Dark2': {'listed': _Dark2_data},
     'Paired': {'listed': _Paired_data},
     'Pastel1': {'listed': _Pastel1_data},
diff --git a/lib/matplotlib/cm.pyi b/lib/matplotlib/cm.pyi
@@ -96,8 +96,8 @@ summer: colors.Colormap
 terrain: colors.Colormap
 winter: colors.Colormap
 Accent: colors.Colormap
-Accessible: colors.Colormap
 Dark2: colors.Colormap
+Okabe_Ito: colors.Colormap
 Paired: colors.Colormap
 Pastel1: colors.Colormap
 Pastel2: colors.Colormap
@@ -188,8 +188,8 @@ summer_r: colors.Colormap
 terrain_r: colors.Colormap
 winter_r: colors.Colormap
 Accent_r: colors.Colormap
-Accessible_r: colors.Colormap
 Dark2_r: colors.Colormap
+Okabe_Ito_r: colors.Colormap
 Paired_r: colors.Colormap
 Pastel1_r: colors.Colormap
 Pastel2_r: colors.Colormap
diff --git a/lib/matplotlib/colors.py b/lib/matplotlib/colors.py
@@ -128,11 +128,11 @@ class ColorSequenceRegistry(Mapping):
         'Pastel2': _cm._Pastel2_data,
         'Paired': _cm._Paired_data,
         'Accent': _cm._Accent_data,
-        'Accessible': _cm._Accessible_data,
         'Dark2': _cm._Dark2_data,
         'Set1': _cm._Set1_data,
         'Set2': _cm._Set2_data,
         'Set3': _cm._Set3_data,
+        'Okabe-Ito': _cm._Okabe_Ito_data,
         'petroff6': _cm._petroff6_data,
         'petroff8': _cm._petroff8_data,
         'petroff10': _cm._petroff10_data,
diff --git a/lib/matplotlib/tests/test_colors.py b/lib/matplotlib/tests/test_colors.py
@@ -1702,7 +1702,7 @@ def test_color_sequences():
     assert plt.color_sequences is matplotlib.color_sequences  # same registry
     assert list(plt.color_sequences) == [
         'tab10', 'tab20', 'tab20b', 'tab20c', 'Pastel1', 'Pastel2', 'Paired',
-        'Accent', 'Accessible', 'Dark2', 'Set1', 'Set2', 'Set3', 'petroff6',
+        'Accent', 'Okabe-Ito', 'Dark2', 'Set1', 'Set2', 'Set3', 'petroff6',
         'petroff8', 'petroff10']
     assert len(plt.color_sequences['tab10']) == 10
     assert len(plt.color_sequences['tab20']) == 20
