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| #This file generates Complementary Colours palletes using three different alghoritms: | |
| #Adjacent (https://itsphbytes.wordpress.com/2016/09/25/getting-adjacent-colors-python-code/), | |
| #Complementary (https://www.101computing.net/complementary-colours-algorithm/) and Gradient. | |
| #The Gradient alghoritm is based on the code from https://stackoverflow.com/questions/22607043/python-generate-color-palette-from-image | |
| import colorsys | |
| def gradient_colors(color1, color2): | |
| """ | |
| It takes two colors and returns a list of 5 colors that are | |
| complementary to the two colors. Basically is a gradient between | |
| the two colors. | |
| """ | |
| if color1.startswith('#'): | |
| color1 = color1[1:] | |
| if color2.startswith('#'): | |
| color2 = color2[1:] | |
| # Convert hex colors to RGB | |
| color1_rgb = tuple(int(color1[i:i+2], 16) for i in (0, 2, 4)) | |
| color2_rgb = tuple(int(color2[i:i+2], 16) for i in (0, 2, 4)) | |
| # Calculate the difference between the two colors | |
| diff = [c2 - c1 for c1, c2 in zip(color1_rgb, color2_rgb)] | |
| # Generate the palette | |
| palette = [] | |
| for i in range(5): | |
| r = color1_rgb[0] + diff[0] * i / 4 | |
| g = color1_rgb[1] + diff[1] * i / 4 | |
| b = color1_rgb[2] + diff[2] * i / 4 | |
| palette.append('#%02x%02x%02x' % (int(r), int(g), int(b))) | |
| return palette | |
| def complementary_colors(hexcolor): | |
| # Check if the input starts with '#'. If it does, remove it. | |
| if hexcolor.startswith('#'): | |
| hexcolor = hexcolor[1:] | |
| # Convert hex to RGB | |
| r = int(hexcolor[0:2], 16) | |
| g = int(hexcolor[2:4], 16) | |
| b = int(hexcolor[4:6], 16) | |
| # Calculate complementary colors | |
| comp_r = 255 - r | |
| comp_g = 255 - g | |
| comp_b = 255 - b | |
| # Convert RGB back to hex | |
| comp_hex = "#{:02X}{:02X}{:02X}".format(comp_r, comp_g, comp_b) | |
| return comp_hex | |
| # Module to convert rgb to hex | |
| def rgb_to_hex(rgb): | |
| return '#%02X%02X%02X' % (rgb) | |
| # Module to convert hex to rgb | |
| def hex_to_rgb(value): | |
| value = value.lstrip('#') | |
| return tuple(int(value[i:i+2], 16) for i in (0, 2 ,4)) | |
| # This module gets the adjacent colors. | |
| # They can be obtained by rotating the color by 30 and 360 | |
| # degrees. | |
| def adjacent_colors(color): | |
| # List to hold two colors | |
| adjacent_colors = [] | |
| # Get the RGB | |
| (r, g, b) = hex_to_rgb(color) | |
| # Set the degree | |
| d = 30/360 | |
| # Values has to be between 0 to 1 | |
| r = r / 255.0 | |
| g = g / 255.0 | |
| b = b / 255.0 | |
| # Convert to HLS using colorsys | |
| h, l, s = colorsys.rgb_to_hls(r, g, b) | |
| # Rotate the color | |
| h = [(h+d) % 1 for d in (-d, d)] | |
| # For both the colors, convert back to RGB and | |
| # load to list | |
| for hi in h: | |
| r, g, b = colorsys.hls_to_rgb(hi, l, s) | |
| r = int(r * 255.0) | |
| g = int(g * 255.0) | |
| b = int(b * 255.0) | |
| hex_val = rgb_to_hex((r,g,b)) | |
| adjacent_colors.append(hex_val) | |
| print(adjacent_colors) | |
| return adjacent_colors | |
| # # Test complementarty colors: | |
| # color = "#771958" | |
| # complementary = complementary_colors(color) | |
| # print(f"Original color: {color}") | |
| # print(f"Complementary color: {complementary}") | |
| # # Test adjacent colors: | |
| # print(f"Adjacent colors for {color}:") | |
| # colors = adjacent_colors(color) | |
| # # Test gradient colors: | |
| # print(f"Gradient colors between {colors[0]} and {colors[1]}:") | |
| # gradient = gradient_colors(colors[0], colors[1]) | |
| # for color in gradient: | |
| # print(color) |