HTML RGB - Hexadecimal Notation
Color values which define HTML colors is known as Hexadecimal notation and colors are displayed combining RED, GREEN and BLUE light, this is also defined as RGB, the lowest HEX value is 0 and the highest is 255, HEX values are depicted as 3 pairs of 2 digit number and start with "#" sign. This online tool is a HEX color code converter which will carry automatic calculations, you simply need to add in the values.
HEX Color Code Converter
Convert/Choose HTML Color Code
Insert Hex Color Value [e.g: 34aa44 ]
This is your color