matplotlib展示调色板

def show_palette():
    import matplotlib.pyplot as plt

    colors = {'#FF0000': 'red', 
              '#00FF00': 'green', 
              '#0000FF': 'blue', 
              '#FFFF00': 'orange', 
              '#FF00FF': 'pink', 
              '#00FFFF': 'cyan',
              (0,255/255,128/255): 'color1'
              }

    fig, ax = plt.subplots(figsize=(6, 5))


    for i, (color, name) in enumerate(colors.items()):
        ax.axhspan(i*5, i*5 + 5.8, color=color, alpha=1)
        ax.text(0, i*5 + 1.9, name, va='center', fontsize=12)


    ax.set_xlim(0, 5)
    ax.set_ylim(0, len(colors) * 5)


    ax.set_xticklabels([])
    ax.set_xticks([])
    ax.set_yticklabels([])
    ax.set_yticks([])

    plt.savefig('palette.png')
    plt.show()


if __name__ == '__main__':
    show_palette()

效果图如下：