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| import numpy as np | |
| import matplotlib.pyplot as plt | |
| import matplotlib.colors as mcolors | |
| def hex_to_rgb(value): | |
| ''' | |
| Converts hex to rgb colours | |
| value: string of 6 characters representing a hex colour. | |
| Returns: list length 3 of RGB values''' | |
| value = value.strip("#") # removes hash symbol if present | |
| lv = len(value) | |
| return tuple(int(value[i:i + lv // 3], 16) for i in range(0, lv, lv // 3)) | |
| def rgb_to_dec(value): | |
| ''' | |
| Converts rgb to decimal colours (i.e. divides each value by 256) | |
| value: list (length 3) of RGB values | |
| Returns: list (length 3) of decimal values''' | |
| return [v/256 for v in value] | |
| def plot_colortable(hex_list): | |
| cell_width = 150 | |
| cell_height = 50 | |
| swatch_width = 48 | |
| margin = 12 | |
| topmargin = 40 | |
| rgb_list = [hex_to_rgb(value) for value in hex_list] | |
| dec_list = [rgb_to_dec(value) for value in rgb_list] | |
| names = [f'HEX: {col[0]}\nRGB: {col[1]}' for col in zip(hex_list, rgb_list, dec_list)] | |
| n = len(names) | |
| ncols = 3 | |
| nrows = n // ncols + int(n % ncols > 0) | |
| width = cell_width * 8 + 2 * margin | |
| height = cell_height * nrows + margin + topmargin | |
| dpi = 72 | |
| fig, ax = plt.subplots(figsize=(width / dpi, height / dpi), dpi=dpi) | |
| fig.subplots_adjust(margin/width, margin/height, | |
| (width-margin)/width, (height-topmargin)/height) | |
| ax.set_xlim(0, cell_width * 4) | |
| ax.set_ylim(cell_height * (nrows-0.5), -cell_height/2.) | |
| ax.yaxis.set_visible(False) | |
| ax.xaxis.set_visible(False) | |
| ax.set_axis_off() | |
| for i, name in enumerate(names): | |
| row = i % nrows | |
| col = i // nrows | |
| y = row * cell_height | |
| swatch_start_x = cell_width * col | |
| swatch_end_x = cell_width * col + swatch_width | |
| text_pos_x = cell_width * col + swatch_width + 7 | |
| ax.text(text_pos_x, y, name, fontsize=14, | |
| horizontalalignment='left', | |
| verticalalignment='center') | |
| ax.hlines(y, swatch_start_x, swatch_end_x, | |
| color=dec_list[i], linewidth=18) | |
| return fig | |
| plot_colortable(['#54478c', '#2c699a', '#048ba8', '#0db39e', '#83E377', '#B9E769', '#EFEA5A', '#F1C453', '#F29E4C']) |
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