Example Analysis of matplotlib built-in single Color in Python
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1. Matplotlib supports color formats
1. RGB or RGBA tuple format colors
Floating-point values in tuples are between [0, 1], e.g(0.1, 0.2, 0.5) or (0.1, 0.2, 0.5, 0.3). RGA stands for Red, Green, Blue;RGBA stands for Red, Green, Blue, Alpha;
2. RGB or RGBA corresponding hex format color
(e.g., '#0F0F0F' or '#0F0F0F0F');
3. Any floating point number between [0,1]
(e.g., '0.5'), where 0 is pure black and 1 is white;
4. {'b',' g','r',' c','m',' y','k',' w'} several basic colors;
Colors in X11/CSS4
e.g. "blue";
6. Color in xkcd
e.g., 'purple (#7e1e9c)';
7. 'Cn' Format Color
matplotlib.rcParams ('axes.prop_cycle') can output all colors,['#1f77b4','#ff7f0e','#2ca02c','#d62728','#9467bd','#8c564b','#e377c2','#7f7f','#bcbd22','#17becf'],'C0' corresponds to '#1f77b4', and so on;
8. Tableau colors in colormap
e.g. 'tab:blue';
2. matplotlib color usage method #from official website instance import matplotlib.pyplot as pltimport numpy as np t = np.linspace (0.0, 2.0, 201)s = np.sin (2 * np.pi * t) # 1) RGB tuple:fig, ax = plt.subplots (facecolor=(.18, .31, .31),figsize=(10,5))# 2) hex string:ax.set_facecolor ('#eafff5')# 3) gray level string:ax.set_title ('Voltage vs. time chart', color='0.7')# 4) single letter color stringax.set_xlabel ('time (s)', color='c')# 5) a named color:ax.set_ylabel ('voltage (mV)', color='peachpuff')# 6) a named xkcd color:ax.plot (t, s, 'xkcd:crimson')# 7) Cn notation:ax.plot(t, .7*s, color='C4', linestyle='--')# 8) tab notation:ax.tick_params(labelcolor='tab:orange')plt.show()
3. Matplotlib built-in single color color number
Matplotlib's built-in colors can be called using matplotlib.colors, and there are four types: 'BASE_COLORS','TABLEAU_COLORS','CSS4_COLORS' and 'XKCD_COLORS'. Use the matplotlib.colors. class name to output color numbers.
'BASE_COLORS' color number b (0, 0, 1)g (0, 0.5, 0)r (1, 0, 0)c (0, 0.75, 0.75)m (0.75, 0, 0.75)y (0.75, 0.75, 0)k (0, 0, 0)w (1, 1, 1)'BASE_COLORS' Color Map
TABLEAU_COLORS color number tab:blue #1f77b4tab:orange #ff7f0etab:green #2ca02ctab:red #d62728tab:purple #9467bdtab:brown #8c564btab:pink #e377c2tab:gray #7f7f7ftab:olive #bcbd22tab:cyan #17becfTABLEAU_COLORS Color Map
CSS4_COLORS color number
There are 148 colors.
color name hex color number aliceblue #F0F8FFantiquewhite #FAEBD7aqua #00FFFFaquamarine #7FFFD4azure #F0FFFFbeige #F5F5DCbisque #FFE4C4black #00000CSS4_COLORS Color Map
XKCD_COLORS color number
A total of 949 color number.
xkcd:cloudy blue #acc2d9xkcd:dark pastel green #56ae57xkcd:dust #b2996exkcd:electric lime #a8ff04xkcd:fresh green #69d84fxkcd:light eggplant #894585xkcd:nasty green #70b23fxkcd:really light blue #d4ffffXKCD_COLORS Color Map
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