rgb2hex and hex2rgb

Version 1.1.1 (53.4 KB) by Chad Greene
Convert colors between rgb and hex values
9.4K Downloads
Updated 20 May 2019

View License

Simply convert between hex color values and rgb color values. These two functions can handle arrays as inputs. Default rgb values are scaled from 0 to 1 to match Matlab's syntax. However, if you'd like to use RGB values scaled from 0 to 255, that'll work too.
SYNTAX:
rgb = hex2rgb(hex) returns rgb color values in an n x 3 array. Values are scaled from 0 to 1 by default.

rgb = hex2rgb(hex,255) returns RGB values scaled from 0 to 255.

* * * * * * * * * * * * * * * * * * * *
EXAMPLES:

myrgbvalue = hex2rgb('#334D66')
= 0.2000 0.3020 0.4000

myrgbvalue = hex2rgb('334D66') % <-the # sign is optional
= 0.2000 0.3020 0.4000

myRGBvalue = hex2rgb('#334D66',255)
= 51 77 102

myhexvalues = ['#334D66';'#8099B3';'#CC9933';'#3333E6'];
myrgbvalues = hex2rgb(myhexvalues)
= 0.2000 0.3020 0.4000
0.5020 0.6000 0.7020
0.8000 0.6000 0.2000
0.2000 0.2000 0.9020

myhexvalues = ['#334D66';'#8099B3';'#CC9933';'#3333E6'];
myRGBvalues = hex2rgb(myhexvalues,255)
= 51 77 102
128 153 179
204 153 51
51 51 230

********************************************************
THE OTHER FUNCTION
********************************************************
SYNTAX:
hex = rgb2hex(rgb) returns the hexadecimal color value of the n x 3 rgb values. rgb can be an array. This function assumes rgb values are in [r g b] format on the 0 to 1 scale. If, however, any value r, g, or b exceed 1, the function assumes [r g b] are scaled between 0 and 255.

* * * * * * * * * * * * * * * * * * * *
EXAMPLES:

myhexvalue = rgb2hex([0 1 0])
= #00FF00

myhexvalue = rgb2hex([0 255 0])
= #00FF00

myrgbvalues = [.2 .3 .4;
.5 .6 .7;
.8 .6 .2;
.2 .2 .9];
myhexvalues = rgb2hex(myrgbvalues)
= #334D66
#8099B3
#CC9933
#3333E6

Cite As

Chad Greene (2024). rgb2hex and hex2rgb (https://www.mathworks.com/matlabcentral/fileexchange/46289-rgb2hex-and-hex2rgb), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2012b
Compatible with any release
Platform Compatibility
Windows macOS Linux
Categories
Find more on Images in Help Center and MATLAB Answers

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

rgb2hex_and_hex2rgb_documentation

Version Published Release Notes
1.1.1

Added live scripts

1.1.0.0

Increased speed and robustness, added an example file.

1.0.0.0