How to generate html bar chart in bash

Hi Experts,
How to generate simple html bar chart in bash based on 3 input values. (without CSS) please

Scenario is, we will provide 3 arguments to function and it should generate a text

Please check the attached the html file which produces this chart and a screen shot with explanations.

Have used below online editor

Please help, thanks in advance.
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A simple loop to print each bar:

while [ $COUNT -le $BARLENGTH ]
  printf '<td BGCOLOR="' >> gen_html.html
  printf "$BARCOLOR" >> gen_html.html
  echo '"> </td>' >> gen_html.html
  COUNT=$(( $COUNT + 1 ))
printf '<td>' >> gen_html.html
printf "$BARLENGTH" >> gen_html.html
echo '</td>' >> gen_html.html

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The scriptlet works, and is the hardest part of the task; I would have been happy to advise further, but not write a complete script as it sounded like possible homework
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