get closest colorname for an RGB color or a list of image files

color_names.py

import colorific


fixed_colors = {
"red" : (255, 0, 0),
'green' : (0, 255, 0),
'blue' : (0, 0, 255),

'orange' : (255, 127, 0),
'pink' : (255, 0, 127),
'violet' : (127, 0, 255),
'yellow' : (255, 255, 0),
'rose' : (255, 127, 127),
'turquoise' : (0, 255, 255),
'blue-green' : (0, 255, 127),
}

def is_grey(r, g, b):

    return (r + g + b) > 150 and (abs(r - g) + abs(r - b) + abs(g - b)) < 30


def is_white(r, g, b):

    return (r + g + b) > (3 * 180)

        
def get_distance((r1, g1, b1), (r2, g2, b2)):

    return abs(r1-r2) + abs(g1-g2) + abs(b1-b2)


def get_closest_color(r, g, b):

    color = (r, g, b)
    if is_white(r, g, b):
        return ""

    if is_grey(r, g, b):
        return ""

    distances = []
    distance_colors = []
    for c in fixed_colors.keys():
        comp_color = fixed_colors.get(c)
        
        dis = get_distance (color, comp_color)
        distances.append(dis) 
        distance_colors.append(c)

    index = distances.index(min(distances))
    nearest_color = distance_colors[index]

    return nearest_color

def get_color_names(filenames):

    allcolors = []
    for f in filenames:
        p = colorific.extract_colors("images/images/" + f)
        colors = [c.value for c in p.colors]
        allcolors.append([f] + colors)
    return allcolors