returns the name of a color
names=rgb2name(r,g,b)
names=rgb2name(rgb)
:r,g,b RGB integer values of a color. : :rgb vector of RGB integer values of a color. : :names names of the color. :
rgb2name returns the color name corresponding to the RGB values given by its argument. A vector of color names can also be returned if the color has more than 1 name. r, g and b must be integers between 0 and 255 corresponding to colors components red, green and blue. As usual 0 means no intensity and 255 means all the intensity of the color. RGB values can also be given by a vector [r,g,b].
If no color is found [] is returned.
The list of all known colors is given by color_list.
rgb2name(255,128,128)
rgb2name([255 215 0])
// get color #10 of the current colormap and find its name
cmap=`get`_(`gcf`_(),"color_map");
rgb2name(cmap(10,:)*255)