Convert RGB, Hex or any other color format to "Standard Color" Programmatically
Problem is that people do not really agree on a 1:1 mapping of color names. But yes such tools exists, this is a simple nearest neighborhood test. You could use any spatial query module to do this. Here is a simple (naive) python example: 

from __future__ import print_function
import webcolors
from scipy.spatial import KDTree

# lets populate some names into spatial name database
hexnames = webcolors.css3_hex_to_names
names = []
positions = []

for hex, name in hexnames.iteritems():
    names.append(name)
    positions.append(webcolors.hex_to_rgb(hex))

spacedb = KDTree(positions)

# query nearest point
querycolor = (10,88, 200)
dist, index = spacedb.query(querycolor)

print('The color %r is closest to %s.'%(querycolor, names[index]))


Which results in: The color (10, 88, 200) is closest to royalblue.

I'm using here the 140 css3 defined colors. Bigger and more comprehensive lists can be found online, if you want a smallerlist that would also work. Theres all kinds of possible things you could do, you could for example linearize the sRGB space before calculating distances to name. You could ask for 3 closest names and give double names if the names are halfway.