How you guys predict right Hexadecimal Color?

Answer 1

For that you could use color picker
It really hard to identify complicated colours

Answer 2

#RR GG BB
00 -> dark
FF -> light
To create red colour
# 00 FF FF
For blue
# FF FF 00
For green
# FF 00 FF
Black is
# 00 00 00
White is
# FF FF FF
other colours like yellow, green can be created from combination of above colours

Answer 3

I know the basics...
#FFFFFF
White
#000000
Black
#FF0000
Red
#00FF00
Green
#0000FF
Blue
#FFFF00
Yellow
#FF00FF
Magenta
#00FFFF
Cyan
And between black and white if we set same value for all three there will be some shade of grey depending on value...
I know these basics i was talking about other colors....