Jim Donnellan has made a presentation all about the issues that can arise for those with colour deficiencies or colour blindness.

1. Colour Deficiencies
3rd Year Project Results

2. What’s the Problem?
A considerable amount of information is presented to computer users through
colour without a text alternative. This means if a user is colour blind, and therefore
unable to distinguish between certain colours, this information could be lost.
A recent usability study
conducted by the UK
Disability Rights
Commission, found that
colour accessibility is the
second most recurring
problem for disabled users
whilst accessing
information on the web.

3. Which Graph is Easier to Read?
In a room of 250 people,
split 50% male and 50%
female, it is said that
there will be more than
ten colour deficient
people in that audience.
As a result, it is possible
that if graphs and
coloured text are used
to display important
information, then this
type of media may be
missed.

4. Creating an Interface
Showing the user interface to a modern pumping
station

5. Not everything is what it seems..
“The hospital is the yellow building”
Color Doctor filtering an image to what a typical Protanope
would see.

6. Suitable colouring Although no specialist hardware
or software is required for users
with colour deficiencies, such as
adapted input devices or screen
readers, consideration needs to
be made for colours of font,
background themes, and buttons.
This is especially true for buttons
which change colour when you
roll over them or text when it is
highlighted.
Bright colours are less confusing
than similar shades of a colour,
with black and white being the
most opposed.

7. Results Problems reading certain websites that have poor
color setups that make the text blend into the
background. Other then that, not much outside
having people ask me what color something all
the time.
School projects,street light,cannot be a cop...
How often does colour blindness effect you at a computer?
as an electrical engineering student, resistors and
capacitors pose a problem for me. Others
around me will help read the colors, I will still
decode them.
Never 6
I'm an extreme red/green deficient and because of
that, i cannot do all the aspects of graphic
design like i would like to. Also, in many cases,
i cannot tell if the robot's lights are even
Not Normally 41 working
not knowing the difference between underlines in
Microsoft word, not being able to see sbtle
Often 61
distincitions in pictures or in life.
sometimes graphs on computers are red-green in
order to show intensitiy and i can't read them
All the Time 18 mostly recognition when reading legends with a map,
or Excel graphs
Small difficulties at work. Sometimes I have to work
0 10 20 30 40 50 60 70
with map making software
Responces
background colours making text hard to see
As a web developer, I can't name the colors I'm using
or be sure my work is aesthetically pleasing. It
also affects me when I come across blinking
traffic lights.

8. Map
Project
http://en.wikipe
dia.org/wiki/Wik
ipedia_talk:Wiki
Project_Maps/A
rchive_1